Manage Allowed Grace Period in Days for Activities in Timesheet

To change the grace period for timesheet reporting:

Click the Resource & Security Admin tab.
Select the Manage Allowed Grace Period In Days For Activities in Timesheet Settings link.
Choose an initiative and click the [Edit] link next to it. The Edit Allowed Grace Period In Days For Activities In Timesheet Settings screen is displayed.
Specify how many days past the activity completion date can team members continue to report effort.
Specify how many days before the activity start date can team members start reporting effort.
Click Update.