BOM Items Feature Manager Tab is not added in BOM+

Symptoms

BOM+ non-modeled items manager tab is not available in the Feature Manager tree.

BOM+ feature is not activated. BOM+ is a part of the Professional package of CAD+ and will not be loaded in Community or Standard Package. Find more information about CAD+ packages here
Tab is added to parts and assemblies only (not available in drawings)
Tab is added to the bottom feature manager tab. If not visible - move the bottom tab
Items Environment is not enabled