Custom Form for Members Signup not creating Member Request

Question:
How do I make a multistep custom form in a light box, act as a custom member signup form and create a member signup request correctly.

Product:
Wix Editor, the basic one they now have.

What are you trying to achieve:
[Add. a custom multistep form into a lightbox that acts as a custom members signup form so that once it is submitted a correct member request will be created for approval on the Wix backend side.

What have you already tried:
Re-Creating the form, viewed a lot of youtube videos, viewed the forum, asked chat support, managed to delete the original signup form so I can’t use that one either LOL

Additional information:
I don’t have any

After a quick search this link may help with what you require