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How do I add my form to my closed Facebook Group?Asked by ppretti on August 30, 2016 at 05:16 PM
You will have to take your form URL and share it with your Facebook Group.
Here's how to take your form URL.
1. Click the Publish icon in the form builder
2. Copy the Form URL in the Publish Wizard.
I don't think Facebook allows embedding scripts or iframes on Facebook Groups. I'm afraid this isn't possible.