This article details the admin User Management.
By default, the Admin role will be added. This allows for Read and Write access to all areas. Click on the settings cog to update (rename, select Read & select Write):
To add a new role, click on + and update the required fields:
Once the new role has been update with all the required fields, click on save and it will be listed:
These roles can be assigned to specific user in User Management.