Agreed; there is not a "pat" answer.
Regardless, the world is an easier place to live in if you only have one current resolution for each entity. In other words, this resolution includes all current signatories and automatically revokes all prior resolutions. Otherwise you may find yourself going through a stack of forms and saying, "Okay, she was put on in '92, when was she taken off..."
In this world you must be oh so smart or oh so pleasant. Well, for years I was smart. I recommend pleasant.