In Inventor 2018.3 or later you have the ability to set an External rule to run every time an Assembly document is open or similar Event Trigger. The easiest way is to set the settings you want then hit the Export button on the bottom of the Assembly BOM window to export the settings, then save that .xml file in a network location so it can be accessed by others if needed.
Here's a sample code:
SyntaxEditor Code Snippet
ThisDoc.Document.ComponentDefinition.BOM.ImportBOMCustomization("C:\temp\BOM Settings.xml")
Have this code saved as an external rule on your network if you need to share it with co-workers, then go into your Event Triggers and set to run on Assembly Document open. If it's an earlier version of Inventor, you can't set the trigger based on file type and will have to run the rule manually.
Let us know if you have anymore questions.