Forms :: Creating A Class Roster From Combo Box

I have a form that the Training Admin will use to select students to a new class.they select the Class Name from a ComboBox tied to TblClass.they select an Instructor from a ComboBox tied to TblInstructor and then, I am trying to to use some method to select students by identifying information (EmplID, LName, FNAme, MName, EMP# from TblEmployee) one at a time (from a combo box, or some other easy select method) that will pass the students information to a list, viewable and editable (remove a name) before it is committed to a TblCompletedTraining

I looked at a cascading combo-boxes, and that looks like a good method to selecting from the large number of employees in TblEmployee, but I am unsure how to store each selection on the form, and then allow the Training Admin the ability to delete members from the pool prior to committing. I am reluctant to use the multivalue field as a solution for a couple of reasons;

- It explicitly states to be used for relatively short lists only (no value limit given; so I assume 100 or less items)
- will probably need to convert this database sometime in the future.

I thought I had figured this out, by using a combo-box selection to generate a filter, but it leaves me with only one selection in the end..