How to correctly configure access rights for users in isp manager?

Question

ISPmanager

Hello. I'm trying to set up permissions for users in isp manager.
Perhaps I do not quite understand this logic, but if I say I give access to databases, then the user has a "Databases" button, but when opened, he does not see any.
The same goes for the file manager. The user only sees the bin-tmp and bin-php folders, not the entire filesystem.
Can you please tell me how to properly configure privileges for users?
I need to set up a person's access to all databases, to the file manager, where he will see all the files.
Thanks in advance to all who respond.