Fill out a form => make a menu entry visible

I have a menu item that is typically hidden (unauthorized) from users.

I would like to create a GF form that would be filled out by registered users that - when filled out and submitted - would make that formerly hidden menu item visible/authorized to that user.

Moreover, this change should be permanent for that user such that if days later that same user logs on to the website then that formerly hidden menu item would continue to be visible/accessible to them.

Any suggestions?

This is new functionality that is urgently needed BUT that also means I can be flexible.

And yes, I plan on using GF and the Registration Add-On to self-register users (and sending a verification email as part of that process).

As for the menu items that are to be dynamically authorized on an individual basis: those similarly do not exist yet so I can implement them in any manner that gets the job done.

Here is expected flow. I expect there to be several menu items that are dynamically authorized by a single user, only not all at the same time:

- On day one the WP website will contain several menu items that are hidden to unauthorized users
- typically a user would self-register with GF and Registration Add-On;
- user gets verification email with confirming link; once they confirm then Menu Item 100 is dynamically (and permanently) made accessible to them
- as part of Menu Item 100 they next fill out another GF form, and when they click SUBMIT then that will dynamically (and permanently) make Menu Item 101 accessible to them
- this process can continue for N number of successive forms