You could use an option button (aka radio button) and group them by utilizing
the group name. This way the user can only select one button within each
group.

Hope this helps,
Chad

"rp2chil" wrote:

Hi, I have a questionnaire that I want users to either select the response in
Column A, B, C, or D.

How do I set up a checkmark, that a user can click in the box to select one
of the columns as his/her answer.

forgive me, there are responses in this forum, however, I still didn't see a
response.