Squarespace Landing Page for my existing site

I would like to create a landing page for my website to allow prospective customers to choose which type of service they are interested in learning more about/engaging me for - my existing services or my new services. I am in the process of formalizing the new service offering and I am setting up a new page on my website that will give people more information about the service and what I am working on. Ideally the landing page will allow them to click either my existing service or my new service.