Enhancing interaction with supplementary Supportive User Interfaces: Meta-UIs, Mega-UIs, Extra-UIs, Supra-UIs, etc. is a relatively new challenge for HCI. In this paper, we describe our view of supportive user Interfaces for AmI applications taking into account Mobility, Collaboration and Contextualization. We describe proposed formalisms and their working conditions: initially created for designers in the design stage; we consider that they can now also be used by final-users for dynamic adjustment of working conditions.