how do you clear and reset option groups

[REDaughdril]

I have a form with four or five fields, one of them being a time. I also have some option groups that are to be checked. What I would like to do is use the same form, have them complete the form and when they are ready, enter new data by pressing a button for a new record and reset all the option groups (cleared of data). I got the new form to start by using the button wizard, but it does not reset the options buttons.
Thanks for the help.