Dropdown control in form - how to populate with field value and update back to database

I am trying to learn the different types of form controls and how they work in Wappler. I have a working update form where I wanted to replace one of the text input controls with a dropdown control. I want to populate it first with the value of the field in the database, then allow the user to changWhat is the right way to do this?

Thanks,
Rick

check boxes and radio buttons are next…