Ministerial powers
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
A phrase used la English conveyancing to denote powers given for the good, not of the donee himself exclusively, or of the donee himself necessarily at all, but for the good of several persons, including or not including the donee also. They are so calied because the donee of them is as a minister or servant in his exercise of them.
Brown.