By default, all sub-classes that extend from StaticDraw3DMeasure (except WorktopMeasure and WardrobeStaticDrawMeasure), ChainDraw3DMeasure and DrawRadialMeasure are associative. Override the method DrawMeasure::allowAssociate() and return false in order to make a dimension non-associative.
// Class: DrawMeasure extend public bool allowAssociate()