1. A subsequent audition, after the initial. "Auditions are on Wednesday. Callbacks will be on Thursday."
2. Invitation to appear for subsequent work. "Load-in is at 8AM. The callback for the load-out is at 11PM." "If you do a good job on the load-in, you may get a callback for the load-out."
2. Invitation to appear for subsequent work. "Load-in is at 8AM. The callback for the load-out is at 11PM." "If you do a good job on the load-in, you may get a callback for the load-out."