When a parent views multiple registrations on a checklist step, they said that these are not necessarily in chronological or alphabetical order.
Event registrations are sorted by the Registration ID. This number is automatically assigned by the system in the order in which they are created.
This information can be found on the Registration Link as the numbers after "rid=". Example: Event registration URL: https://[schoolname].myschoolapp.com/podium/default.aspx?t=36644&rid=12345 Registration ID: 12345