Your WGSD staff login is set up with information from the Acceptable Use Policy (AUP) form filled out during the onboarding process: lastname.firstname, and the password you provided. Typically, this is your legal name—though there are a few exceptions.
Accordingly, if Jonathan Smith filled out his AUP with his full legal name and a password of K!tchyK00!, his first attempt to log into his new staff laptop should be with the username smith.jonathan and the password K!tchyK00!.
No joy? Try smith.jon—if that doesn't work either, Smith should find his building tech for assistance.