If an Applicant wishes to request a revision to a subapplication, it must release a subapplication(s) to the Subapplicant so the revision can be made. On the Subgrant Status: Submitted Applications screen, this request for revision will show up as "Revision Requested By Grantee" in the Review Status column. 

Once a subapplication section(s) has been released for revision, you would need to select Update Application in the Action column.

After selecting Update Application, you will see specific comments from the Applicant and have the opportunity to navigate to the subapplication section(s) to make the changes.