Head to "Setting & Billing" section. Find a tab called "Roles" and click on it. If you don't see one of the partitions, you most likely don't have access rights. Contact the owner of your workspace.
Then click on "New role" button to start.
Write down the name for new role.
Next, you need to assign access to the sections of the role. Find out more about access rights here.
You can also add a description to the role, if it's needed. When you're done adjusting settings for a new role, click the "Create role" button.