If everyone is there to set up your exhibition at a certain agreed upon time, then you should be engaged and answering any questions immediately if not sooner, regardless of how long it takes to set up the exhibition.
Certain agreed upon time? Yes, of course. You should probably be there for most of it too.
But once you're covering multiple days, no, a single person should not be expected to respond lightning fast the entire time. And the several day scenario is what the comment I replied to talked about.
But once you're covering multiple days, no, a single person should not be expected to respond lightning fast the entire time. And the several day scenario is what the comment I replied to talked about.