Unable to use ZAC on Chrome

actually I am now confused.. as these are the identities on the controller

id: -2bZn.JmC name: golang.http.server type: Service role attributes: {}
id: -s88AyxhC name: golang.http.client type: Service role attributes: ["http-clients"]
id: DnCBnKJmd name: golang.http.mobile.client2 type: Service role attributes: ["http-clients"]
id: Oxjpe.JhC name: golang.http.desktop.client type: Service role attributes: ["http-clients"]
id: l5HlP0DMV name: Default Admin type: User role attributes: {}
id: mY6wnyxhCL name: instance-20220317-1005-edge-router type: Router role attributes: {}
id: rSmOkyJmCL name: golang.http.mobile.client type: Service role attributes: ["http-clients"]

where the Default Admin is the name of the Admin user

But.. this appears to be the display name.. not the username..

is there anyway to create a new Admin user that is not Admin?