Need help understanding Adobe Portfolio

Hi there. I experimenting with adobe portfolio and I have to ask a question.  Now I notice when I select Add Page and I can choose collection for it. However I notice when I make it I can't add it to a destination like my main one that has side links to other ones. So how do I set it up where I can make a link on my home page that goes to that collection page.  Or how can I have it where my home page I make can connect to the page I made that is collection since i can't set the collection page destination in my home page.