Hello peterwyckoffanalytics,
the Pro version has a feature that might be used in your case. Specifically, There is a dedicated cell property named HTML Content that allows the user to include HTML in the cells. In your case for example an HTML select element.
We are planning to include all the cell properties also in the free version. However I can’t provide you a release date at the moment.
Note: If in your case the selection of the user should also apply changes to the table content or behavior please add more details so I can verify if this is something that can be done with the plugin and provide you a precise answer.