I'm trying to figure out how to add a relationship class (related table one-to-many) to a feature layer within AGOL. I do not have ArcGIS Desktop or Server (do have QGIS but I don't think that will help here).
The only info I was able to find led me to believe that it may be possible by editing the service definition JSON but I can't find any reference as to how to edit it to make it work.
What are my options here?
Also, is viewing/editing/adding to related tables supported in AGOL web apps yet (not just Collector)?