I run one or two group shoots each month at the studio, primarily bringing in local models to work with.
The shoots are always fashion based and I encourage the models to bring 3 different looks, one for each hour.
Usually on a Tuesday or Thursday evening and the occasional weekend, I try to keep the groups small - 5 togs max, and focus on creating an encouraging, supportive environment where everone is helping each other out rather than competing for time with the model.
Even if you've never shot in a studio or worked with a model before, plemty of help is on hand if you need it. All experience levels are welcome.