To add a new principal, select Add Principal from the
Principals node context menu. You will get a form split in
two search forms (see Figure 9). You can search users and
devices, then select a particular user and a particular device
and press Add Principal.
As seen for users and devices you can search existing principals selecting Search Principals. You will see the form of Figure 10. Set the search criteria and press Search.
To delete a principal select the desired row from the search results list and press Delete.