If you have class pass in your offering online for yogis, they can purchase these by booking a class or by the offering at My Schedule.
If a yogi wants to book a class in future and does not have a valid class pass, the yogi will be promoted to purchase one. After purchasing, the yogi is booked onto the class with a valid class pass. The validity of the class pass starts on this date. Note that if a yogi decides to book a class before this date, it is not possible to book a class with this class pass. As a teacher you can manually adjust the start date of a class pass, if you have agreed to do so at the yogi's page.
If a class pass is purchased by the offering at My Schedule. The class pass will be valid from the day of purchase. If a yogi decides to buy a class pass while another class pass is still valid, these two class passes will have an overlap in validity. You can change the start date of the class pass if you wish to do so at the yogi's page.