Paid Membership and automatic appointment scheduling options

Site URL: https://www.missfitsworkout.co.uk/

Hi, I'm pretty new to Squarespace and web design... I've managed to set up scheduling for class bookings and now want to add a membership area for a monthly 'Class Pass' so alongside having access to my scheduled classes they also get other membership perks. 

Is it possible to either automatically add members to a particular type of scheduled event , or give them the option to select them each month? Or is the only way to do this to give them a coupon code for 100% discount on scheduled appointment and get them to book into each one (8-12 per month)? It seems a bit long-winded that way - is their an easier way to book them in if they are members?

Thank you for you help! 🙂