Aras 12 effectivity on custom itemtypes


Is there any help documentation available for effectivity in the open Aras 12 version? I know that there's documentation for the sample application for Aras 11, but the part BOM effectivity seems to be set up differently in Aras 12. I've been trying to use effectivity with a custom itemtype by mimicing the way the Part BOM effectivity scope, query definitions and tree grid views are set up, but I've been unsuccessful. I would greatly appreciate any advice.

Best Regards