on your award winning hosts site you have a tab added for "Submit a review", which when clicked says"

Submit a Review

To submit a review of your web host, first check the list of hosts to the right. If yours is listed, scroll to the end of its reviews and you’ll be able to add your own.

If your website’s host is not currently listed on Award Winning Hosts, and you’d like to leave a review for others to read, we’d be happy to list it. Leave your review below, making sure you mention who hosts your website, and we’ll create a listing for the host and move your review as soon as possible."

Then at the bottom of the listings it has a nice formatted title saying "Write a review".

I would think most of us would want this in our other templates (the tab, the title, any special coding changes needed).

Can you advise how we can add that to a template? Is there any special coding needed for people to actually submit a listing?

This is just a normal page, there is no extra special code. There is no automatic moving of the reviews left on that page to their own posts, either.