Trying to figure out what the below field is used for, there doesn't seem to be any references to it in the training materials for Seminars.
This is to do with taking attendance where the "Select" option for enrolled users is 'Set/All/Not Set' and refers to users who attended the event being parked as 'Fully Attended/Partially Attended/No Show'.
Not sure of what the "Select' option here refers to.