diff --git a/frontend/src/component/feature/FeatureView/FeatureOverview/ReleasePlan/MilestoneProgressionForm/MilestoneProgressionForm.tsx b/frontend/src/component/feature/FeatureView/FeatureOverview/ReleasePlan/MilestoneProgressionForm/MilestoneProgressionForm.tsx
new file mode 100644
index 0000000000..b2621a75cc
--- /dev/null
+++ b/frontend/src/component/feature/FeatureView/FeatureOverview/ReleasePlan/MilestoneProgressionForm/MilestoneProgressionForm.tsx
@@ -0,0 +1,258 @@
+import { useState } from 'react';
+import {
+    Button,
+    MenuItem,
+    Select,
+    styled,
+    TextField,
+    type SelectChangeEvent,
+} from '@mui/material';
+import BoltIcon from '@mui/icons-material/Bolt';
+import {
+    useMilestoneProgressionForm,
+    type TimeUnit,
+} from '../hooks/useMilestoneProgressionForm.js';
+import { useMilestoneProgressionsApi } from 'hooks/api/actions/useMilestoneProgressionsApi/useMilestoneProgressionsApi';
+import useToast from 'hooks/useToast';
+import { formatUnknownError } from 'utils/formatUnknownError';
+
+const StyledFormContainer = styled('div')(({ theme }) => ({
+    display: 'flex',
+    flexDirection: 'column',
+    gap: theme.spacing(1.5),
+    padding: theme.spacing(2),
+    backgroundColor: theme.palette.background.paper,
+    borderRadius: theme.spacing(0.75),
+    border: `1px solid ${theme.palette.divider}`,
+    boxShadow: theme.boxShadows.elevated,
+    position: 'relative',
+    marginLeft: theme.spacing(3.25),
+    marginTop: theme.spacing(1.5),
+    marginBottom: theme.spacing(1.5),
+    animation: 'slideDown 0.5s ease-out',
+    '@keyframes slideDown': {
+        from: {
+            opacity: 0,
+            transform: 'translateY(-24px)',
+        },
+        to: {
+            opacity: 1,
+            transform: 'translateY(0)',
+        },
+    },
+}));
+
+const StyledTopRow = styled('div')(({ theme }) => ({
+    display: 'flex',
+    alignItems: 'center',
+    gap: theme.spacing(1.5),
+}));
+
+const StyledIcon = styled(BoltIcon)(({ theme }) => ({
+    color: theme.palette.primary.main,
+    fontSize: 20,
+    flexShrink: 0,
+    backgroundColor: theme.palette.background.elevation1,
+    borderRadius: '50%',
+    border: `1px solid ${theme.palette.divider}`,
+}));
+
+const StyledLabel = styled('span')(({ theme }) => ({
+    color: theme.palette.text.primary,
+    fontSize: theme.typography.body2.fontSize,
+    flexShrink: 0,
+}));
+
+const StyledInputGroup = styled('div')(({ theme }) => ({
+    display: 'flex',
+    alignItems: 'center',
+    gap: theme.spacing(1),
+}));
+
+const StyledTextField = styled(TextField)(({ theme }) => ({
+    width: '60px',
+    '& .MuiOutlinedInput-root': {
+        borderRadius: theme.spacing(0.5),
+        '&:hover .MuiOutlinedInput-notchedOutline': {
+            borderColor: theme.palette.primary.main,
+        },
+    },
+    '& input': {
+        textAlign: 'center',
+        padding: theme.spacing(0.75, 1),
+        fontSize: theme.typography.body2.fontSize,
+        fontWeight: theme.typography.fontWeightMedium,
+    },
+}));
+
+const StyledSelect = styled(Select)(({ theme }) => ({
+    width: '100px',
+    fontSize: theme.typography.body2.fontSize,
+    borderRadius: theme.spacing(0.5),
+    '& .MuiOutlinedInput-notchedOutline': {
+        borderRadius: theme.spacing(0.5),
+    },
+    '&:hover .MuiOutlinedInput-notchedOutline': {
+        borderColor: theme.palette.primary.main,
+    },
+    '& .MuiSelect-select': {
+        padding: theme.spacing(0.75, 1.25),
+    },
+}));
+
+const StyledButtonGroup = styled('div')(({ theme }) => ({
+    display: 'flex',
+    gap: theme.spacing(1),
+    justifyContent: 'flex-end',
+    alignItems: 'center',
+    paddingTop: theme.spacing(1.5),
+    marginTop: theme.spacing(1),
+    borderTop: `1px solid ${theme.palette.divider}`,
+}));
+
+const StyledErrorMessage = styled('span')(({ theme }) => ({
+    color: theme.palette.error.main,
+    fontSize: theme.typography.body2.fontSize,
+    marginRight: 'auto',
+}));
+
+interface IMilestoneProgressionFormProps {
+    sourceMilestoneId: string;
+    targetMilestoneId: string;
+    projectId: string;
+    environment: string;
+    onSave: () => void;
+    onCancel: () => void;
+}
+
+export const MilestoneProgressionForm = ({
+    sourceMilestoneId,
+    targetMilestoneId,
+    projectId,
+    environment,
+    onSave,
+    onCancel,
+}: IMilestoneProgressionFormProps) => {
+    const form = useMilestoneProgressionForm(
+        sourceMilestoneId,
+        targetMilestoneId,
+    );
+    const { createMilestoneProgression } = useMilestoneProgressionsApi();
+    const { setToastData, setToastApiError } = useToast();
+
+    const [isSubmitting, setIsSubmitting] = useState(false);
+
+    const handleTimeUnitChange = (event: SelectChangeEvent<unknown>) => {
+        const newUnit = event.target.value as TimeUnit;
+        form.setTimeUnit(newUnit);
+    };
+
+    const handleTimeValueChange = (
+        event: React.ChangeEvent<HTMLInputElement>,
+    ) => {
+        const inputValue = event.target.value;
+        // Only allow digits
+        if (inputValue === '' || /^\d+$/.test(inputValue)) {
+            const value = inputValue === '' ? 0 : Number.parseInt(inputValue);
+            form.setTimeValue(value);
+        }
+    };
+
+    const handleSubmit = async () => {
+        if (isSubmitting) return;
+
+        if (!form.validate()) {
+            return;
+        }
+
+        setIsSubmitting(true);
+        try {
+            await createMilestoneProgression(
+                projectId,
+                environment,
+                form.getProgressionPayload(),
+            );
+            setToastData({
+                type: 'success',
+                text: 'Automation configured successfully',
+            });
+            onSave();
+        } catch (error: unknown) {
+            setToastApiError(formatUnknownError(error));
+        } finally {
+            setIsSubmitting(false);
+        }
+    };
+
+    const handleKeyDown = (event: React.KeyboardEvent) => {
+        if (event.key === 'Enter') {
+            event.preventDefault();
+            handleSubmit();
+        } else if (event.key === 'Escape') {
+            event.preventDefault();
+            onCancel();
+        }
+    };
+
+    return (
+        <StyledFormContainer onKeyDown={handleKeyDown}>
+            <StyledTopRow>
+                <StyledIcon />
+                <StyledLabel>Proceed to the next milestone after</StyledLabel>
+                <StyledInputGroup>
+                    <StyledTextField
+                        type='text'
+                        inputMode='numeric'
+                        value={form.timeValue}
+                        onChange={handleTimeValueChange}
+                        onPaste={(e) => {
+                            const pastedText = e.clipboardData.getData('text');
+                            if (!/^\d+$/.test(pastedText)) {
+                                e.preventDefault();
+                            }
+                        }}
+                        inputProps={{
+                            pattern: '[0-9]*',
+                            'aria-label': 'Time duration value',
+                            'aria-describedby': 'time-unit-select',
+                        }}
+                        size='small'
+                    />
+                    <StyledSelect
+                        value={form.timeUnit}
+                        onChange={handleTimeUnitChange}
+                        size='small'
+                        aria-label='Time unit'
+                        id='time-unit-select'
+                    >
+                        <MenuItem value='minutes'>Minutes</MenuItem>
+                        <MenuItem value='hours'>Hours</MenuItem>
+                        <MenuItem value='days'>Days</MenuItem>
+                    </StyledSelect>
+                </StyledInputGroup>
+            </StyledTopRow>
+            <StyledButtonGroup>
+                {form.errors.time && (
+                    <StyledErrorMessage>{form.errors.time}</StyledErrorMessage>
+                )}
+                <Button
+                    variant='outlined'
+                    onClick={onCancel}
+                    size='small'
+                    disabled={isSubmitting}
+                >
+                    Cancel
+                </Button>
+                <Button
+                    variant='contained'
+                    color='primary'
+                    onClick={handleSubmit}
+                    size='small'
+                    disabled={isSubmitting}
+                >
+                    {isSubmitting ? 'Saving...' : 'Save'}
+                </Button>
+            </StyledButtonGroup>
+        </StyledFormContainer>
+    );
+};
diff --git a/frontend/src/component/feature/FeatureView/FeatureOverview/ReleasePlan/ReleasePlan.tsx b/frontend/src/component/feature/FeatureView/FeatureOverview/ReleasePlan/ReleasePlan.tsx
index c21c780d14..18436282dc 100644
--- a/frontend/src/component/feature/FeatureView/FeatureOverview/ReleasePlan/ReleasePlan.tsx
+++ b/frontend/src/component/feature/FeatureView/FeatureOverview/ReleasePlan/ReleasePlan.tsx
@@ -24,6 +24,7 @@ import { StartMilestoneChangeRequestDialog } from './ChangeRequest/StartMileston
 import { usePlausibleTracker } from 'hooks/usePlausibleTracker';
 import { Truncator } from 'component/common/Truncator/Truncator';
 import { useUiFlag } from 'hooks/useUiFlag';
+import { MilestoneProgressionForm } from './MilestoneProgressionForm/MilestoneProgressionForm.tsx';
 
 const StyledContainer = styled('div')(({ theme }) => ({
     padding: theme.spacing(2),
@@ -156,6 +157,9 @@ export const ReleasePlan = ({
     const { refetch: refetchChangeRequests } =
         usePendingChangeRequests(projectId);
     const milestoneProgressionsEnabled = useUiFlag('milestoneProgression');
+    const [progressionFormOpenIndex, setProgressionFormOpenIndex] = useState<
+        number | null
+    >(null);
 
     const onAddRemovePlanChangesConfirm = async () => {
         await addChange(projectId, environment, {
@@ -263,6 +267,15 @@ export const ReleasePlan = ({
         });
     };
 
+    const handleProgressionSave = async () => {
+        setProgressionFormOpenIndex(null);
+        await refetch();
+    };
+
+    const handleProgressionCancel = () => {
+        setProgressionFormOpenIndex(null);
+    };
+
     const activeIndex = milestones.findIndex(
         (milestone) => milestone.id === activeMilestoneId,
     );
@@ -296,44 +309,90 @@ export const ReleasePlan = ({
                 )}
             </StyledHeader>
             <StyledBody>
-                {milestones.map((milestone, index) => (
-                    <div key={milestone.id}>
-                        <ReleasePlanMilestone
-                            readonly={readonly}
-                            milestone={milestone}
-                            status={
-                                milestone.id === activeMilestoneId
-                                    ? environmentIsDisabled
-                                        ? 'paused'
-                                        : 'active'
-                                    : index < activeIndex
-                                      ? 'completed'
-                                      : 'not-started'
-                            }
-                            onStartMilestone={onStartMilestone}
-                        />
-                        <ConditionallyRender
-                            condition={index < milestones.length - 1}
-                            show={
-                                <ConditionallyRender
-                                    condition={milestoneProgressionsEnabled}
-                                    show={
-                                        <StyledConnectionContainer>
-                                            <StyledConnection />
-                                            <StyledAddAutomationIconButton color='primary'>
-                                                <Add />
-                                            </StyledAddAutomationIconButton>
-                                            <StyledAddAutomationButton color='primary'>
-                                                Add automation
-                                            </StyledAddAutomationButton>
-                                        </StyledConnectionContainer>
-                                    }
-                                    elseShow={<StyledConnectionSimple />}
-                                />
-                            }
-                        />
-                    </div>
-                ))}
+                {milestones.map((milestone, index) => {
+                    const isNotLastMilestone = index < milestones.length - 1;
+                    const isProgressionFormOpen =
+                        progressionFormOpenIndex === index;
+                    const nextMilestoneId = milestones[index + 1]?.id || '';
+                    const handleOpenProgressionForm = () =>
+                        setProgressionFormOpenIndex(index);
+
+                    return (
+                        <div key={milestone.id}>
+                            <ReleasePlanMilestone
+                                readonly={readonly}
+                                milestone={milestone}
+                                status={
+                                    milestone.id === activeMilestoneId
+                                        ? environmentIsDisabled
+                                            ? 'paused'
+                                            : 'active'
+                                        : index < activeIndex
+                                          ? 'completed'
+                                          : 'not-started'
+                                }
+                                onStartMilestone={onStartMilestone}
+                            />
+                            <ConditionallyRender
+                                condition={isNotLastMilestone}
+                                show={
+                                    <ConditionallyRender
+                                        condition={milestoneProgressionsEnabled}
+                                        show={
+                                            <ConditionallyRender
+                                                condition={
+                                                    isProgressionFormOpen
+                                                }
+                                                show={
+                                                    <MilestoneProgressionForm
+                                                        sourceMilestoneId={
+                                                            milestone.id
+                                                        }
+                                                        targetMilestoneId={
+                                                            nextMilestoneId
+                                                        }
+                                                        projectId={projectId}
+                                                        environment={
+                                                            environment
+                                                        }
+                                                        onSave={
+                                                            handleProgressionSave
+                                                        }
+                                                        onCancel={
+                                                            handleProgressionCancel
+                                                        }
+                                                    />
+                                                }
+                                                elseShow={
+                                                    <StyledConnectionContainer>
+                                                        <StyledConnection />
+                                                        <StyledAddAutomationIconButton
+                                                            onClick={
+                                                                handleOpenProgressionForm
+                                                            }
+                                                            color='primary'
+                                                        >
+                                                            <Add />
+                                                        </StyledAddAutomationIconButton>
+                                                        <StyledAddAutomationButton
+                                                            onClick={
+                                                                handleOpenProgressionForm
+                                                            }
+                                                            color='primary'
+                                                        >
+                                                            Add automation
+                                                        </StyledAddAutomationButton>
+                                                    </StyledConnectionContainer>
+                                                }
+                                            />
+                                        }
+                                        elseShow={<StyledConnectionSimple />}
+                                    />
+                                }
+                            />
+                        </div>
+                    );
+                })}
             </StyledBody>
             <ReleasePlanRemoveDialog
                 plan={plan}
diff --git a/frontend/src/component/feature/FeatureView/FeatureOverview/ReleasePlan/hooks/useMilestoneProgressionForm.ts b/frontend/src/component/feature/FeatureView/FeatureOverview/ReleasePlan/hooks/useMilestoneProgressionForm.ts
new file mode 100644
index 0000000000..ee849a9f5b
--- /dev/null
+++ b/frontend/src/component/feature/FeatureView/FeatureOverview/ReleasePlan/hooks/useMilestoneProgressionForm.ts
@@ -0,0 +1,73 @@
+import { useState } from 'react';
+
+const MAX_INTERVAL_MINUTES = 525600; // 365 days
+
+export type TimeUnit = 'minutes' | 'hours' | 'days';
+
+interface MilestoneProgressionFormDefaults {
+    timeValue?: number;
+    timeUnit?: TimeUnit;
+}
+
+export const useMilestoneProgressionForm = (
+    sourceMilestoneId: string,
+    targetMilestoneId: string,
+    {
+        timeUnit: initialTimeUnit = 'hours',
+        timeValue: initialTimeValue = 5,
+    }: MilestoneProgressionFormDefaults = {},
+) => {
+    const [timeUnit, setTimeUnit] = useState<TimeUnit>(initialTimeUnit);
+    const [timeValue, setTimeValue] = useState(initialTimeValue);
+    const [errors, setErrors] = useState<Record<string, string>>({});
+
+    const getIntervalMinutes = () => {
+        switch (timeUnit) {
+            case 'minutes':
+                return timeValue;
+            case 'hours':
+                return timeValue * 60;
+            case 'days':
+                return timeValue * 1440;
+        }
+    };
+
+    const getProgressionPayload = () => {
+        return {
+            sourceMilestone: sourceMilestoneId,
+            targetMilestone: targetMilestoneId,
+            transitionCondition: {
+                intervalMinutes: getIntervalMinutes(),
+            },
+        };
+    };
+
+    const validate = () => {
+        const newErrors: Record<string, string> = {};
+        const total = getIntervalMinutes();
+
+        if (timeValue < 0) {
+            newErrors.time = 'Time must be non-negative';
+        }
+
+        if (total === 0) {
+            newErrors.time = 'Time cannot be zero';
+        } else if (total > MAX_INTERVAL_MINUTES) {
+            newErrors.time = 'Time interval cannot exceed 365 days';
+        }
+
+        setErrors(newErrors);
+        return Object.keys(newErrors).length === 0;
+    };
+
+    return {
+        timeUnit,
+        setTimeUnit,
+        timeValue,
+        setTimeValue,
+        errors,
+        validate,
+        getProgressionPayload,
+        getIntervalMinutes,
+    };
+};
diff --git a/frontend/src/hooks/api/actions/useMilestoneProgressionsApi/useMilestoneProgressionsApi.ts b/frontend/src/hooks/api/actions/useMilestoneProgressionsApi/useMilestoneProgressionsApi.ts
new file mode 100644
index 0000000000..fcfe361715
--- /dev/null
+++ b/frontend/src/hooks/api/actions/useMilestoneProgressionsApi/useMilestoneProgressionsApi.ts
@@ -0,0 +1,33 @@
+import useAPI from '../useApi/useApi.js';
+import type { CreateMilestoneProgressionSchema } from 'openapi/models/createMilestoneProgressionSchema';
+
+export const useMilestoneProgressionsApi = () => {
+    const { makeRequest, createRequest, errors, loading } = useAPI({
+        propagateErrors: true,
+    });
+
+    const createMilestoneProgression = async (
+        projectId: string,
+        environment: string,
+        body: CreateMilestoneProgressionSchema,
+    ): Promise<void> => {
+        const requestId = 'createMilestoneProgression';
+        const path = `api/admin/projects/${projectId}/environments/${environment}/progressions`;
+        const req = createRequest(
+            path,
+            {
+                method: 'POST',
+                body: JSON.stringify(body),
+            },
+            requestId,
+        );
+
+        await makeRequest(req.caller, req.id);
+    };
+
+    return {
+        createMilestoneProgression,
+        errors,
+        loading,
+    };
+};