Implementing comment's behaviour to a form

Hello!

Just as the title says, I’m trying to figure out how to implement the comment’s behaviour to a contact form.
To be more precise, when a person writes a comment, it needs to be moderated by an admin first. From the dashboard, the admin can allow or deny the posting of the data inserted in that form on a certain page of the website.

I want to use a form because I want to use a bunch of drop-downs among some other input fields.
I also need to mention that I entend to use the Comments as they are, so I can’t modify their function and replace the form(I don’t actually know if it is even possible).

Any help is appreciated.
Cheers

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