If you have a component that you make and it gets used on multiple higher level assemblies, there is no provision to allow a component job template to be referenced on more than one higher level template. For example, if you are making a left and right hand version of a vehicle door and use the same window crank on both door assemblies, you can't use the same window crank template as a component in both assemblies. You instead have to create something like "CrankL" and "CrankR" templates and then use those templates as component parts on the DoorL and DoorR assemblies.
This could be great ! But if a Part Master use as component in other template could be updated when the Master is update this could be Awesome and a Big Time Saver