Don't put the buttons in any group (frame) at all. Just use plain option
buttons with no frame. That way they act independently. A group presumes a
choice is required, and if only one button, only one choice - so you can't
deselect it.

"Paul" wrote:

I have a form which contains 4 option buttons. I would like them to be
independently checkable. To do this, I made each button a seperate group. I
can check all of them independently now, but once they are checked, they
don't seem to be able to be unchecked. How can I configure the button so that
it can be unselected by clicking on it again?

Thanks.

--
Paul