If there are many subjects related to that I/R number, and you are trying to search those subjects, you should be able to do that, but without being able to see your database, it's difficult to figure out how to go about it. If you create another form, use the subjects table as the recordsource. Create a dropdown to search the subjects. Use your current subform as a subform on this new form. Once you get that to work, then, use the new form as a subform on the I/R form instead of the one you're using now. Does that make any sense?