NetApp
Configuration > Network > Network Files : Managing network files : Assigning a local user to a group
Assigning a local user to a group
You can assign a user to one or more predefined groups, giving that user the roles and capabilities associated with those groups.
Steps 
1.
From the Home tab, double-click the appropriate storage system.
2.
In the navigation pane, click Configuration > Local Users and Groups > Users.
3.
Select the local user that you want to assign to a predefined group.
4.
Click Edit.
5.
Click Member Of.
6.
Click Add.
7.
Select the group that corresponds with the access level you want to assign to the user and click Add.
8.
Click OK to save your changes.