What is a User Role?
Users in WordPress can be one of six default roles: Super Admin, Administrator, Editor, Author, Contributor, or Subscriber. WordPress provides a user role management system that defines what users are allowed to do on your website.
More About User Roles
The Super Admin role enables a user to perform every administrative task on a website. They have access to all multisite capabilities, such as creating and deleting sites, upgrading the network, and managing its users.