Restricts edits to selected permission groups. The filter only selects objects that belong to the groups you select. If you do not select any groups, the filter includes all groups in the list.
To enable the tree view for selection, check the Restrict edits and propagation to objects in the permission groups selected below.
To include one or more permission groups for your objects, press CTRL and click the name of each group you want to include. You can display objects only in the groups for which you have read access. You can select several groups in a folder by selecting one group and then holding the SHIFT key and selecting another. All groups between the two are also selected.
You can add permission groups in the Project Management task.