Answer: prompter

AnswerCrossword Clue
PROMPTEROffstage V.I.P.
PROMPTEROne who cues performers
PROMPTER"Tele" attachment
PROMPTERTele attachment
prompterone who prompts (to move to action)
prompterA person seated out of sight of the audience who supplies a forgotten word or line to an actor during the performance of a play