For those interested, I got an email answering this question. I will quote it. It is pretty straightforward, although there is no tutorial that walks through it.:
The dialog / workflow does not appear to have changed between
10.2.2 and 10.3:
- From the Site > Data Stores page in GeoEvent Manager
you should select to ‘Register ArcGIS Server’
- Select the ‘AGOL’ radio button to specify that you’re
registering an connection to ArcGIS Online
- You should only need to enter:
o A name for the connection (e.g. My_AGOL)
o A username / password used to log-in to
your Organization
o The default update interval is 5 minutes
- Click ‘Register’
If you want to test to see if you’ve successfully registered the
connection to the server, try importing a GeoEvent Definition. You should be
able to select your registered Server connection to the AGOL Organization and
discover any hosted feature services / feature layers in existing service
folders.
Thank you!!!
--Adam
