Can't copy a group - RC1

I'm trying to create another Admin group to my board.

This users may not access the "Main Admin"group. But they can do everything else.

So I try to create another group. But the "Main Admin" group can't edit this new group.

So I've try to copy the Moderators group and ensure the proper rights. No luck!

Even if I try grant acess to the new group i got the message that I can't.

Can anyone help me?

I solve it.

I don't know how exactly, but it was successfully.

Only one question: How to prevent this group do "Enable master password"?

The only way is not allowing the "System Option"?

Thanks!