Adding sidebars on checkout pages helps visitors to learn more about the website and also to know why they should join.
There are some pre-made sidebars but we do not recommend using any of them in checkout pages because they contain links that will send them out of the checkout page and the idea is that when they are on the checkout page, they sign up and become free or paid members of the website.
Below is a sidebar example we recommend. It includes text and images.
Once the new sidebar has been added to the Sidebar Manager, it can be selected by going to Finance >> Membership Plans >> Edit >> Sign Ups & Upgrades >> Sign Up Page Sidebar:
Now this new sidebar will be displayed on the checkout page of that specific membership plan.
The system allows adding one sidebar per product (Free, Premium, Featured, etc)