set up your appointments, then generate appointments for the next 1-2 weeks. Try a few weeks at time (or maybe a month at a time), so members don't book too far in the future, or book multiple appointments. Don't worry if you make a mistake, there is a delete function.
Bulk email members with login details and link to detailed instructions, include the link to the member login page, their username and password (bookmarks [username] and [password]) in the email. Always test by sending to yourself first, attach or link to more detailed instructions,
sample email below
NOTE: Don't use version 1 to hold toys