Is possible to make one of the three layouts a two-column layout? We've customized the layout by modifying class.walkerwpDiscuz.php and comment-form.php but I still want the option of at least one of the 3 layouts to be the default 1 column.
We don't follow you well. Do you mean the customization you've done has affected all layouts? You can simply add the "if" condition and check if the layout is not supposed to be two-column, just exclude it. I.e, remove the customization for the current layout via "if" condition.
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