callboy
Theater errand runner
A callboy is a theater employee who notifies performers when it's time for them to go onstage, typically by knocking on dressing room doors or making announcements.
The term also refers to a bellhop or hotel employee who wakes guests or runs errands on request.
In older slang, callboy was sometimes used for a male prostitute, particularly one summoned by telephone.
backstage
Theater's hidden area
rehearsal · curtain · intermission · blocking · lines · cast · director · actors · script · performance
bellhop
Hotel luggage attendant
attendant · valet · concierge · usher · steward · footman · servant · doorman · butler · errand
theater hierarchy/role
callboydirector
One who leads
star · lead actor · producer · stage manager · prima donna