Non-master realm admin control

I know this is not the intended use (i.e., only the master realm’s users should have the ability to manage more than just their own realm), but is there any way of allowing the users of a non-master realm to have the same permissions/abilities as admin users of the master realm?

For example, if I have 3 realms, master, master2, and foo, is there any way to allow users in master2 to view/edit foo in the security admin console?