As the title suggests i would like to learn how to point a parked domain to another website hosted in a different directory on my paid hosting server.

Here are the circumstances, i have a paid hosting and a domain, i also got a second free domain and a second website. I would like to host the second website files in a different directory then the one in which i host my main website. Than i want to park that second free domain in this server, and make a sort of redirect to point it to that second folder. How do i do that? How do i tell that second parked domain to display files from that second directory?

Thank you a lot.