Create Identifier for cell(s)

I'm working on the following macro:

A row contains a drop-down list that, depending on the selection, adds or deletes rows below the current row. The initial row and the added rows comprise a single "entry," and there are multiple entries.

My problem lies in that right now the VBA script I've written to perform this task has the first drop-down list's cell number hard-coded. This could be OK, except I need to apply the same functionality to the drop-down lists of all the entries, and since rows are being added and deleted constantly, their locations keep changing.

I was wondering if there was a way to identify a cell (that's not unique) that I could check for, analogous to the "class" attribute in HTML.

Or, is there another way to do what I'm wanting that I'm not thinking of.

Thanks for your help,
B.J.