Index page with links to other websites?

Site URL: https://www.cinemasf.com/

My home index page (cinemasf.com) is currently set up so that if you click on one of the theaters listed you will go to that theaters page within the website.  However, now I have separate, individual whole websites for each of the theaters (for example https://vogue-theater.squarespace.com/) and I want the cinemasf.com home index page to link to those sites instead.  Is this possible?

Thanks!

Yes. Possible.

Do you use Personal or Business Plan? each plan will have a different code