When the Recast Management Server (RMS) is first installed, the account that ran the installer was added to the Recast Administrators local group. This allows for authenticating in the webpage for the first time. This group only allows the account to be an admin in the RMS web interface but does not give any other admin privileges. The user accounts will still need to be added in RMS under Administration > Permissions > Recast Users and given a Recast Role to use other Recast products like Right Click Tools and Endpoint Insights. This can be helpful in situations where the former RMS admin may have left the company and no one else can log in.