I have two high school/college freshman that work under my supervision. They are responsible for monthly shelf inspections. I do go behind them every Monday on my "all day" walk through and make sure that there aren't any lingering outdates. I usually find some. The techs are assigned outside areas. We have one tecch that is responsible for all our physician offices and she travels all month.
Our techs are assigned different areas inside the hospital and on the campus. Our physician offices are inspected monthly by the nurse at that office. I go out once a year and check behind them to make sure the inspections are being done right. I think we are going to twice a year.
Our practices are the same as Amy's. Techs each have designated area which includes pyxis units, crash carts, cupboards, etc. One of them is also responsible for the pharmacy itself. I audit and check outdates in the CII safe.