The Genre setting with Theatre Manager are directly connected to the Ticket Trove application. This means the drop down is restricted to the current list of options and is not available for customization. You can however, create your own custom genre lookup using the Event code used to define each event within Theatre Manager OR the Performance Flag field which is associated with each performance within the database. This allows you to group together different types of performances or events and create your own sort options within the online sales.