Set 365 day criteria in sabbatical leave end date based on date entered in leave start date

Summary: Set 365 days criteria in sabbatical leave end date based on date entered in sabbatical leave start date

Content (please ensure you mask any confidential information): We have a DOR where 2 date fields are used and both fields are DFFs.
1st field is request for sabbatical leave start date and the other is request for sabbatical leave end date.
The requirement is that if in one Date DFF field which is request for sabbatical leave start date, start date is entered as 10th July, then in the sabbatical leave end date DFF field, system should not allow an employee to enter a date beyond 365 days.