The Mid Moderator (AKA fmod, AKA Forum Moderator - the one who has automatic moderation and banning rights for the entire forum) cannot be given extra authority.
$grp_staff{'Mid Moderator'} = [ 'Forum Moderator', '5', 'starfmod.png', '#008080', 0, 0, 0, 0, 0, 0, 0 ];
$grp_staff{'Global Moderator'} = [ 'Coordinator', '5', 'stargmod.png', '#0000FF', 0, 0, 0, 0, 0, 0, 0 ];
$grp_staff{'Administrator'} = [ 'Forum Administrator', '5', 'staradmin.png', '#FF0000', 0, 0, 0, 0, 0, 0, 0 ];
$grp_staff{'Moderator'} = [ 'Board Moderator', '5', 'starmod.png', '#008000', 0, 0, 0, 0, 0, 0, 0 ];
Apparently you are confusing the label YOU gave the position with how the position is recognized within YaBB. (I have a forum where the Administrator position is labeled 'IAC Member" and Global Moderator is labeled 'IAC Security'.)