So you want only the founder to see IP addresses? If yes, you will have to remove members from the original administrators group. Administrators have all the permissions/privileges of the founder, except for some that only the founder can see in the administration panel.
well i have 2 cases. 1. i am a member of another forum, where i dont want admins to see my IP address. 2. i am a founder but wish to prevent my other admins from check ip adresses, without removing them.