When you originally registered for the site, you received an email with your user name and a link to your hiring center. First, look for that email and follow the instructions.
If you can’t find that email, you can type in your hiring site URL (company123.hyrell.com) into the address bar of your web browser. In the upper right corner of the site, you’ll see “Employer Log-in". Click that link, and you’ll be taken to the screen that asks for your Email and Password. Enter the correct information and you can log on to your hiring system.