I'm a staff scientist in a medium-sized lab and I'm organizing a large event for high school students at my university, a large public research institution. I'd like to invite a professor or senior researcher to give a talk at the event.
Is it generally considered okay to invite your close collaborators (e.g. PI, direct supervisors) to give a talk?
I have no misconceptions about the importance of my event (it's not) but I don't want to violate some etiquette by asking someone in my lab to give a talk. What about other events, small conferences, etc.?