How do I cancel/change my volunteer shift if I can’t make it? February 27, 2024 00:07 If you need to cancel your volunteer shift please select the “withdraw” option from your shift in your Rosterfy portal. If you want to change your shift, please withdraw from your original shift before signing up for a different shift. Related articles What are the age requirements to attend a volunteer shift? Can I volunteer and race on the same day? How do I sign up for a volunteer shift?