2 fields same input

first of all great product.

Second since I am pretty knew to the creator, its kinda hard using the codes.

My problem is with this:

I have managed to create a dropdown field based on a selective entry from another forum. But My issue is to make a normal text field along with the dropdown field which updates the same entry in the database. Like for example within the dropdown if I click others I should be prompted / I could input the details absent in the dropdown.

Inaddition, will it be possible for the new entry to automatical update the parent database of the dropdown.

Thanks,

Jag