BSABSA,
If your client is an entity, it has a right to authorize different people to do different things; e.g. sign on the account, send wire transfers, borrow money, open safe deposit boxes, etc. If you are thinking that only account signatories should also be authorized to send wires, you are making suggestions about a customer's corporate governance and internal controls that are not your bank's to make.
For example, the owner of a corporation is entitled to allow Tom, Dick, and Harry to sign on the checking account, but via the resolutions approved by the board, reserve the right to authorize wire transfers to herself. There is simply no connection between being able to sign checks and any of the other authorities mentioned.
As an aside, I suggest that "affiliates" has the meaning you attribute to it only within your institution. As used here, it is misleading. Most likely these people are just employees or owners of the entity, just not the same ones who sign on the checking account.
_________________________
In this world you must be oh so smart or oh so pleasant. Well, for years I was smart. I recommend pleasant.