Radio Button Multiple Columns

[#1]

I would like a single radio box with two vertical columns of four buttons each. The user could select one of the eight buttons only. Is there a way to do this?  I tried to make to radio boxes (one for each vertical column) and then Group them together, but it does not seem to work.

Thanks

[#2 · Accepted solution]

This discussion worked for me. Horizontal Radio Buttons