Is it possible to change the end date of a Performance Document?

Summary:

Hi All,

I'm trying to figure out if there's a way to change the end date of a performance document while it's InProgress, after the initial creation of the document. Ideally, a manager and/or an admin would be able to edit the performance documents date. The goal would be to see the updated end date in the final document PDF print out, and during reporting.

If this is possible please let me know,
Thanks