How can I change/ cancel my shift? Tom Lindsay April 18, 2018 06:57 Updated Follow To change/cancel the shift you have registered for, please log into your My Events portal. From here you can either choose to: - CHANGE EVENTS - CANCEL REGISTRATION Related articles How do I find my Volunteer shift times? What should I wear or bring for my Volunteer shift? Can I change my wave time preference after registering How long are Volunteer shifts? Toughest Mudder Rule Book Comments 0 comments Please sign in to leave a comment.