Form submission requires approval

I have a custom form that users can submit with a variety of data. Before that data is displayed on the site, I would like to have it manually approved. I found a post here from a user with a similar problem that describes the answer but I’m unclear on how to implement it. https://www.wix.com/corvid/forum/community-discussion/approval-for-form-inputs-made-by-users

“Just put a Boolean into the Collection that the form issuer cannot fill out. THen make another page for Approval that selects on all Booleans that are NOT TRUE (false is an entirely different matter, it has to do with the fact if booleans are bi- or tri-logical).”

I don’t want a field that the user can see but not fill out, I don’t want the user to see it at all. For example, when the submit button his clicked, the form automatically adds the value of NOT TRUE to the DB until it is manually changed to TRUE. How can I add this functionality?

Hi,
You can add a beforeSave hook to your form collection and set a new field as false in the saved item, create an admin page that allows you to change that value and insert the item to a new “approved submissions” collection.

Or