The roles in Openbadges.me allows you to select which users see what, and what they can do within the platform. You can find the roles area by using the left hand menu within Openbadges.me and going to "System Settings > Roles".
Openbadges.me comes with various default roles that you can choose from, but you can also create your own here. To create a role, you will need to give it a name, a display name, and a description. You will then choose the functionality that the role has access to within the system.