To specify the server, client, and policy type for a SharePoint Server restore operation
In the Specify NetBackup Machines and Policy Type dialog box, from the Server to use for backups and restores list, select the NetBackup server that performed the backup.
From the Source client for restores list, select the client.
The source client is the SharePoint Server computer name whose backup images you want to browse.
From the Policy type for restores list, choose MS-SharePoint.