How do I add multiple group selection in a webform?
This is possible if you’re using Embed or Button type webform.
Let’s start from button type – click on the name of your webform and select the tab Pop-up Form:
Click Edit in the right and then select Groups field:
As you can see there’s a possibility to remove the selection from Required (on the right side of each group). When you do that – it appears as a checkbox in your form.
The same can be done with embed type webform.