(written from a Production point of view)
Jim Grenon appeared as a command division Starfleet officer in the Star Trek: The Next Generation fourth season episode "Redemption" in 1991. He received no credit for this appearance and was identified by the call sheet for the day of shooting, 11 April 1991. Grenon filmed his scenes on the bridge, in front of the transporter room and in the corridor on Paramount Stage 8 and 9 and was listed as "Aft Crew" on the call sheet.
He had a set call at 8:30 a.m. and a note on the call sheet informed him to go to wardrobe first ½ hour before set call.