On the Home page, open the sidebar with the Menu button in the upper left corner.
In the sidebar, click on [Your Page]
On this page you will see a box that says "Enter URL" Here you can paste in the address of whatever page you would like to link.
Once you've pasted in the link, click [Add Link].
Your new link will pop up in the list at the bottom of the page, and should be clickable on your business page under the Links tab.
Add Links to your Business Page
This Doc shows you how to add links to the Links section of your Business Page. This allows you to link your other online content like your website or social media profiles.