My wife (Deb) works in the office of a university president. She is the Executive Assistant, but her role is evolving into more of a CoS, the latter post being vacant after the retirement of the previous occupant because her current boss didn’t trust him, and the position atrophied.

The former CoS did whatever was asked of him, but not with any degree of excellence, and never seemed to grasp that his role was to anticipate the needs of the president, not sit around waiting for assignments. Deb, OTOH, functions as the president’s “Radar O’Reilly” (his characterization) and he keeps giving her more to do as a result.