Was interested in adding this plugin to my site, and wanted to use it for allowing people to book resources in the company for events. Would I be able to use this plugin with out requiring people to offer payment of any sort (or lsting prices)? Could they book more than one item at a time? Also, can they see a printout of everything they've booked (like a my summary?). As an Admin, would i be able to also see this information? Thanks!