Venues for concert or theater?

If you want to have an audience make a group and set the preferred activity to be Watch Performance. Then if you want more sims make more than one group with that trait. Then make their preferred venue the venue you want to be your performance venue. This is how I handle having an audience. Kinda tedious butttt I guess groups liking performances and going to them all is like Sims who like going to the gym with their group or club. They will sit in the chairs too and watch. That is the only way I have been able to get sims to sit and watch.