<remoting enabled="false" requireSecureConnection="false">
  <authorization>
    <add Permission="Allow" IdentityType="Role" Identity="sitecore\PowerShell Extensions Remoting"/>
    <!-- example to disable specific user from an endpoint: -->
    <!--add Permission="Deny" IdentityType="User" Identity="sitecore\admin" /-->
    <add Permission="Deny" IdentityType="User" Identity="sitecore\admin"/>
  </authorization>
</remoting>