Maps are organised as follows:
Maps represent other Entities like Areas and Regions.
Map Tiles and Map Images represent Maps. Maps can have multiple Map Tiles.
Maps contain Map Features, such as points on the map.
Map Features indicate the location of specific Entities, their target.
RightClick anywhere on a Map to place a Map Marker. From there, you can create a Map Feature and choose an Entity to target.
The maps for Xenoblade X, do not support editing from the Maps view. These will be migrated to the editable Maps eventually.