About the Clients tab
The Clients tab contains a list of clients to be backed up (or acted upon) by the selected policy. A client must be included in the list of at least one backup policy to be backed up.
Placing a client in more than one backup policy can be useful. For example, place the client name in two policies to back up different sets of files on the client according to different policy rules.
The Clients tab does not appear for Vault or Catalog policy types.
On UNIX: You can also use the Clients tab to install NetBackup software on trusting UNIX clients.