I have rows of 4 checkboxes where only one checkbox can be selected at a time. I now need to restrict the form from being submitted if one of those checkboxes for each row hasnt been selected, and I need a comment to appear to advise the user that 'all questions must be answered before submitting'.
Any ideas?

The primary suggestion would have to be posting this question in an apprpriate forum where you will likely get the help you are after. Somewhere within the software or web development sections I would imagine...

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