The joker must ensure that the stage is arranged to optimise the forum play experience: The background of the stage must be neutral, so it does not steal the audience’s attention from the play itself. The joker must be placed so his attention is towards the performance. A high barstool for the joker can be useful. When the actors are not performing, they must be seated on chairs at one side of the stage.
When doing plays, the group can be seated in the audience, though group members of the performing group should not take part in the initial discussion of the play. It is important that the spect-actors are allowed to form their own opinion of the scene, without being introduced to the thoughts and motivations of the performing group.