The user who signed up for the product is marked as the Org Admin. An Org Admin has the authority to manage users, accounts, and policies within that organization.

Note: An Organization always needs to have at least one Org Admin. By default, the person signing up for the account will be made the first Org Admin. Learn more about how to make someone an Org Admin? 

Here is a brief about the role of an Org Admin: 

• There can be more than one Org Admins to manage the users and accounts. 
• Org Admins can update other user's profile details, configure security policies, import accounts from another organization, or change Org URL.
• An Org Admin can mark another user in the organization as an Org Admin.
• An Org Admin can remove the role of an Org Admin for another admin.