Woo Side Cart on checkout page

I’m creating a one-page checkout functionality on my site where the user can choose the products that he/she wants to purchase, and then immediately checkout, however, the plugin does not show up on a checkout page. Is there a way that it can be enabled for this page? Also the plugin doesn’t seem to show-up on non-Shop pages. I’d like for users to be able to look at their cart contents while browsing throughout the site.
Thanks!