You can use the acf_form() function with the “form” option set to false. This will allow you to show the input fields without generating the form. That way you can add it to the Restrict Content Pro’s form.
But please keep in mind that this will only show the input fields. It won’t process the data. To process the data, you need to follow the guide in the link you’ve shared.
I hope this makes sense 🙂
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