We provide a free volunteer based tax service and need an online utility to schedule appointments. Previously use a free version of GenBook. It's no longer free. Need to show multiple providers, services including preset length of time per service and set up schedule of available dates and times. Need a client input form, email confirmation of appoint, means to modify or cancel appointment by client or manager, and email to manager for each appointment or down-loadable bulk listing. Potential for use by over 35,000 volunteers nationwide.