Additional elements are locked in for the two David Mamet plays on tap for Broadway this fall, with John C. McGinley joining the cast of “Glengarry Glen Ross” and new title “The Anarchist” shifting theaters from the Lyceum to the Golden.

McGinley (“Scrubs”) hasn’t been on Broadway since the short-lived 1985 staging of Rod Serling play “Requiem for a Heavyweight.” In the latest revival of “Glengarry,” thesp plays scheming salesman Dave Moss in a cast that already includes Al Pacino and Bobby Canavale.

Meanwhile, “Anarchist” — also produced by “Glengarry” duo Jeffrey Richards and Jerry Frankel — has moved theaters, sliding from the previously announced Lyceum into the Golden, which is generally considered more desirable in part due to its location on a prime block west of Broadway. Theater, which most recently housed Alan Rickman topliner “Seminar,” will be refurbished in time for the fall opening of “Anarchist,” starring Patti LuPone and Debra Winger.

Such venue changes aren’t uncommon on Broadway, since the moving parts of theater bookings can often rearrange during the run-up to a New York stint. The Golden was likely promised to another show for which producers have changed their expectations; some in the industry believe the Main Stem house had been a potential home for “The Exorcist,” the stage version of the well-known chiller that earlier this summer bowed at L.A.’s Geffen Playhouse to largely unenthusiastic reviews.

“Glengarry” kicks off previews Oct. 16 prior to a Nov. 11 opening at the Schoenfeld Theater, while “Anarchist” begins previews at the Golden Nov. 13 ahead of a Dec. 2 opening.