On a web map's item page, if you go to Settings > Web Map, there are two checkboxes at the bottom: Use in ArcGIS Collector and Use in ArcGIS Field Maps. (The Collector option has been removed in ArcGIS Online but still exists in Enterprise 11.5) By default, every map created has Use in ArcGIS Field Maps toggled on / checked. I would like a way to change the global setting so that this is toggled off / unchecked by default. Most of the maps we create do not need to be available in Field Maps, and adding them by default creates clutter for users that have limited screen real estate. I can imagine that not everyone would want this to be off by default, so I'd like to see it as an option in Organization > Settings.