How do I have dropdown list change to when checkbox1 is selected or when checkbox2 is selected?

I would like to have the dropdown list have specific options for when "box" is selected, and have different options for when "pin" is selected

the way I have the check boxes set up is they have the same name but different export values so then only one can be selected at a time. When you check the BOX then try to check the PIN, it will currently deselect BOX for me which is how I want it.

Please let me know what javascript or setting can be changed to make this happen!

Thank you for any help!!

-JP