DFF to be Calculated and auto-populated based on selection of other date validation DFF

DFF to be calculate and auto-populated based on selection of other Date Type DFF at project level.

Hi , we have a requirement of populating an end date DFF based on the value selected in the start date DFF and we want this to be a Auto calculated and Auto populated DFF. Any help on this one is appreciated

for example- if the user selects 1/1/2023 as a start date then the end date DFF should be auto populated as 4/1/2023

Thanks

Abhishek