"the add-in in the startup folder is a very small .dotm that has no other purpose than to load 2 other global add-ins from a secure location on a remote network server. This method is set up essentially as you describe above. The add-ins on the server are more easily updated/maintained that way."

That is precisely why. So does the wee one load the others automatically? It seems so.

By dynamically, I mean that ours added a toolbar icon which had:

Finance
Personnel
Engineering

and others.

That way, the Finance people got the Finance addins, Personnel got the theirs, Engineering got theirs.

It was a toggle. Click again, it was removed.