The Access List exists as a multivalue property assigned to Item, Group, and User objects. Access lists control the access rights granted to specific users or groups with respect to these three types of objects. Modifying the access list for any item, group, or user requires that you or your group is assigned either Owner or Admin access rights to the object
Log on to a system and select Users or Groups in your tree window.
Click on a specific User or Group object.
Click the + symbol next to your selected object and click Access List to display the access list form in your right pane window.
To add access list entries to the object, click either Groups or Users.
From the list of User Names or Group Names, choose a name.
Click an access level button (Admin, Owner, Author, Viewer, or None) to assign an access level and add the selected name to the object’s access list.
Select a name from the access list.
Click one of the access level buttons to change the current access level.
Select a name from the access list.
Click Save to save your changes to the access list.
Click Reset to return the access list to its former settings and not save any changes you made.