Administrator Usergroups

When a user creates an account or I create an account the administrator user groups tab disappears. It was there after I had just installed every thing and created the group but after assigning the first person it just disappeared and I can no longer post some one to that user group. And ideas?? I’m at a loss I’ve looked and looked even reinstalled and it then again started working for the first assign then it disappeared again.

Okay I found out after messing with the database only the 1st account “admin” can assign an admin user group. Explaining why I was able to see it as first and wasn’t able to see it when I changed accounts. Now my question is can I add another account number to be allowed to change admin user groups ?