Hello Nguyen
I could not find any setting to set privileges for a user in above link.
But I had some success using the ZenPacks.skills1st.UserRoles-1.1.egg. Here I could set privileges for a user to see only certain devices.
Unfortunatly it works only for devices and not for reports (Graph report).
If you could give me some more detailed advice using the zport/dmd/manage page (or the zport/manage_access) I would be very happy!
Kind regards
Marcel