How do I change my username or password?
https://www.computerhope.com/issues/ch000767.htm05.12.2021 · Select the user account you want to change. Click Reset Password or Change Password. In the New Password and Verify fields, type the new password. After entering the new password, click the Reset Password or Change Password button again. If a dialog window pops up, click OK. Change password in macOS 10.2 to 10.2.8. Log in using an administrator ...