Hi guys, I've solved it:The report should have the following columns:NameYearGroup membership (filtered by group and teacher where the filter 'contains' the surname of the teacher 'and' the name of the subject). There are two filters here.Why group membership is because that is how you allocate them into teacher groups of one lesson (you do that in the assignment by scheme spreadsheet).The filters need to have 'Prompt at the Run time' ticked so that anybody can form the list they need.