Hi, I cannot remove a group from user,

when I open manage user page, then on Groups tab, I tried to remove the group from user, but it shows a dialog to choose which group to delete. But the group that I want to delete is not there, and I cannot detach a user from a group now.
My group name is Test Group, and I cannot delete it within a user

Hi so I can create multiple admin for a single tenant using fusionauth. Other admin only can manage users.
But the problem is, they can lock the default admin (the first admin account on the fusionauth), and I want to prevent that. So I just kinda want to build a "super admin" and "admin" roles. The super admin can delete or manage other admin accounts, but the admin can't delete or manage super admin account.
How to achieve that?