Hi Chris!
I need to create a Combo Box that does this:  when one selects one alternative from the list, a second combo box opens with another list.  The new list gives new alternatives for another selection. Even a further selection list opens up for a third choice.  Is this called Cascading?  
My database is about Orthodontic Treatments (braces). There are many products of many different sizes for each specific tooth.   This means for example:  I select Band from the first combo box  called Procedures. Then, a second combo box opens and I select a 36 (which is a name of a tooth). Finally, a third combo box opens and I select LL17 All this can be summarized in: I banded tooth 36 with a band size LL 17.
I look forward to your help!
Best regards
Ana

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Reply from Richard Rost:

Yep. These are called cascading combo boxes.