I've been setting up related records for my newer Collector maps that deal with Water Utility maintenance. I eventually found evidence (cannot for the life of me find it now) that in order to create related records, the feature service must give the user ability to Add & update features at minimum. I do not want people adding in hydrants/valves/etc because Collector makes it very easy for the non-technically inclined to either create or move around my infrastructure.
• What kind of editing is allowed?
This is just for updating data within a point, changing the color based on pass/fail, then making a related record for the type of inspection (Since I can't change symbology from a related record). I have made a separate feature service for misc points where I won't care if they are on accident but can still get notes down and see me about necessary edits. Is there a way to create related records with the option for just "update features or update attributes?"