1. Prior to the first day in the theater when the actors and stage managers will be onstage, a qualified individual(s) (e.g., safety supervisor, etc.) should conduct a production assessment of all the production elements and all working areas where the actors and stage managers will utilize. 
  2. No later than the start of the first day in the theater when the actors and stage managers will be on stage, the qualified individual(s) should give an orientation to the actors and stage managers explaining the results of the production assessment and conducting a walk of all working areas pointing out the safety measures, hazard awareness, etc.
  3. Thereafter, the qualified individual(s) should give an orientation to all replacement actors and stage managers as well as Swings and Understudies prior to their first rehearsal onstage.  
  4. Any conditions that change with production elements and/or in working areas, the actors and stage managers must be notified immediately prior to working with the production elements and/or in the working areas. 

Additional information can be found here.