Possible Clues:

• One of those on course raising Othello in off-stage setting
• Putting on this jumper, male player might relax here
• Never to return wearing dress in theatrical space for visitors
• Place for actors to relax with their friends
• Space where performers wait
• Place in TV studio for the rest of the guests?
• Apparently envious over opportunity that's provided for rest of players
• Where players may relax given fresh scope
• No thanks to Garbo, Monroe wandering in space backstage
• Where actors can relax in the theatre