Aras12 add a new Change relationship tab


I just downloaded Aras12 and see that the part changes tab now relates to a Tree grid view and Query definition.

Has anybody with Aras12 tested to create a new change tab and add correct relations?

In Aras 12 "PE_Changes" query definition, they have been able to add Simple ECO's etc, but I can't figure out how.
I cant see how they did that, due these references are not available as choices when trying to add them to my new query definition