Once on the integration page for NowCerts, enter their NowCerts sign on credentials. They use this to sign in to NowCerts.

You can test it if you want. Hit save and if the credentials were correct, it will be on the sync settings page.

You may have to wait a minute or two and refresh. The settings for agents, policy types, etc. should be loaded in now.

Select the ones you want and click save again.