Easy to post open shifts for casual staff

We are a small not-for-profit charitable organization that runs our own events monthly and also rents our facility out to the community. Because we essentially have a lot of casual staff and one-off events, trying to schedule people and find out their availability would be a full-time job in itself. With Deputy, I can post an open shift and our casual staff can look to see what kind of position it is, what type of event it is, and choose whether it works with their schedule. It alleviates a lot of time trying to contact employees for every single shift we have open.