Linking Intterra Feature Services into Collector

Before adding feature services into Collector, ensure that the service is set up properly in ArcGIS Online

Use this link for more details on that process.  Link Intterra Feature Services into AGOL
 Create a web map using the linked service into the AGOL account
  1. Add > Search for Layers > Choose the desired Intterra-hosted feature service
  2. Ensure that Edit button visible
  3. Save Map to your AGOL account
  4. Load ArcGIS Collector on device (need to login using local AGOL user?, pick the webmap?)