All available bolt-ons can be added in the 'Your Gym' section of your Member's Area on our website and the buddy bolt-on can be added on the Account section of our app.
The change will be immediate and a small amount will be added onto your next payment to cover the rest of this month's use of the new feature. We will then send you an email to confirm the change and your next payment.
Head here for more info about bolt-ons!