A user group is a set of users who perform the same tasks. Create user groups to simplify the administration of the Commvault environment.
Procedure
- 
From the navigation pane, go to Manage > Security. The Security page appears. 
- 
Click the Users groups tile. The Users groups page appears. 
- 
In the upper right of the page, click Add user group. 
- 
In the Add user group dialog box, provide the user group information. 
- 
To specify the amount of data that members of the user group can back up, do the following: - 
Select the Quota enabled check box. 
- 
In the Quota limit box, type the maximum number of gigabytes that members of the group can back up. 
 
- 
- 
Click Save.