To set pager start/stop times:
In the navigation tree, click Mailboxes > Mailbox Maintenance.
Search for a specific mailbox or click Show All to see a complete list of mailboxes.
Select a mailbox in the list, and then click Edit > Selected. The Mailbox data view is displayed.
On the Message Waiting tab, click the Details link associated with the Pager MWI type.
Select a Start Time and Stop Time for the primary and/or alternate pager.
Click Save.