1 credit is equal to 1 session
When booking your child on to an activity it will state in the information, how many credits the activity is worth.
For single sessions, 1 credit is equal to 1 session.
For a course, the amount of credits is equal to the amount of sessions. For example, if a course ran over 4 sessions, it would be worth 4 credits.
When booking on to an activity, it will confirm how many credits will be taken for the booking.