The spectator shuttle bus will operate regularly between the Park & Ride site and the venue. If you select Park & Ride as your journey option in the Games Journey Planner, you will be taken to the Park & Ride booking platform. Here you will select your time slot of arrival to the Park & Ride site. It includes a 15-minute window, to allow you to arrive and then catch your shuttle bus on time.
You can access the Journey Planner here: https://www.birmingham2022.com/visit.