Forms

I have added a contact page to my site, and it works fine. What I need it to do though is to have a drop down so users can select who it goes to. I have looked at the different plugins and can’t find one that says anything about this. I do not want to have to do three forms, I only want one that gives the option of sending to person (A) or person (B) or to both (A) and (B). I see in setting git up you can change the html for the layout of the form but not the area that tells it where to send it.