I installed this hack as explained here, and everything shows up as supposed to, with the exception of those permissions.
Here is what the Administrator usergroup permissions look like after I have chosen the permissions, and BEFORE I have pressed Update:
This is what it looks like after I press Update:
This is what the Usergroup Manager page looks like after I have set the permissions:
This is the permissions of the new 'administrator' usergroup
And I originally installed the v.5 version, but then uninstalled that when I realised that I only had chat version 4. Please disregard that post.