To onboard an AP Systems site just two items are required. A set of credentials (username and password OR an Authorized ID), and an agreement to their terms of service.
https://apsystemsema.com/ema/index.action
Login with your username and password.
If presented, agree to the APS terms and conditions.
Next, choose either Step 2 or Step 3.
Click the Test Connection button. If all is well, you will be greeted with a green success message, and you can press Next to move on.