Attachments on T&L Timesheets

In the PeopleSoft Time and Labor module, can you attach documents on the delivered Timesheets?

I'm looking to see if an employee can attach signed forms on their own timesheet through Employee Self-Service (ESS).

I know that employees and managers can add comments to a row on a timesheet or on the Reported Time tab on the Timesheet Page. It would be a nice feature to add an attachment to a comment.

We're currently using the Classic Plus Timesheet on PS 9.2, PUM 32, PeopleTools 8.57