I am having trouble with figuring out how or what to set someone's enrolment status as in order to enable them to enrol on a new session/event.

They were absent from a session/event which has been marked as absent by the instructor - however without disenrolling them I am struggling to be able to see what status I need to choose for them to be able to go ahead and select a new date from the course?

I need them to remain on the previous session as absent really so we are able to report on absentees.

Does anyone have any ideas on how I might go about this?

TIA