Stay on Tool when user first signs up

I’d like to send new prospects/students to a particular pickaxe. When they arrive they need to sign-up. When they signup it takes them out of that tool and to the Home page, and then they need to navigate back to the tool I first sent them to. I’d like to see if they could just stay on that first tool without having to navigate back to it. Thanks!

After signing up they are redirected to the topmost Pickaxe in your left-hand nav.