If you have paid for multiple single sessions, book your first session here  on the Single Session link, and the remaining sessions will be added to your Practice.io account within 24 hours for you to book at your leisure. 

If you have booked a monthly subscription, choose the corresponding number of sessions you are subscribed for and Practice.io will manage the rest. I reccomend booking as far in advance as possible. You can always reschedule if needed.