Answer: deputize

AnswerCrossword Clue
DEPUTIZEPin a star on, maybe
DEPUTIZEAppoint as a substitute.
DEPUTIZEMake a sheriff's aide.
DEPUTIZEAppoint as an assistant
DEPUTIZEMake a substitution?
deputizeto act as a deputy; substitute
deputizeto act as a deputy, also DEPUTISE
deputizeto appoint as deputy