I have a requirement to only allow the user to link a single attachment (photo) with a point feature. When the relationship is generated, it creates a 1 to many (allowing for single point feature to be linked to many attachments). I couldn't find a way to modify the relationship, so I deleted it, and regenerated it as a 1 to 1 relationship. That broke the ability to add an attachment in Collector for ArcGIS. Is there any way to do what I'm requesting?