Is it possible to change the expiration date on the offer letter right before sending to the candida

At this stage of creating an offer, we need to enter the date by which our offer will be valid. We cannot assess the exact date because some approvals are still missing. However, the deadline is a field automatically filled in the offer letter file. Sometimes before the offer goes out to the candidate - the deadline passes.

The solution would be to be able to change the expiration date right before it is sent to the candidate, but already after the Hiring Manager's approval, etc.

Is it possible to change the expiration date on the offer letter right before sending it to the candidate?