Grant/Deny Permission more easily

Hi,

It seems for me, that the Permissions in RDM are handled quite difficult. If I for example go to a Folder -> Properties -> Permissions, I can "Grant Access" but not "Refuse Access". For refusing Access, I would have to go through every tab and remove the Group from the specific attribute. It would be very convenient, if we could grant/deny access in a window, like the "Grant Access" window, but with the option to see the current grant access and deny it.

Kind regards,