I am creating a spreadsheet and one column will have a date established and
another column will have a follow-up date, which will be three weeks from
established date. Is there a formula to change the follow-up date every three
weeks and can it stop changing when the word "closed" is entered in another
column. The follow-up date already has a conditional format to turn red and
alert user that notices are due. The esatblish date is permanent.