You can back up a SharePoint document on demand.
Procedure
From the navigation pane, click Protect > Applications > SharePoint.
The SharePoint page appears.
Click the database server.
The database server page appears.
On the Content tab, in the row for the subclient that you want to back up, click the action button
, and then click Back up.
The Select backup level dialog box appears.
For Backup level, select the backup type.
Click OK.