alternate group when assembly

Aladine

info on alternate groups (when clicking the question mark) says that inventory may contain either of these similar items. But when alternate group is for an assembled part? 'Either' wouldn't be correct. It would be several parts on one side against 1 single (assembled) part on the other.

DagsBricks

What if the assembly has a variant?

Aladine

then it just multiplies the problem. But the basic problem is: how to specify in an alternate group that it is either this group of 2 or more parts or that assembled part