Mutual awareness between users working in collaborative virtual environments is an important factor for efficient collaboration. Several studies have reported that haptic feedback improves performance in collaborative tasks. However, few researches have tried to evaluate the influence of haptic feedback on mutual awareness, and to link the corresponding measures with the performance and efficiency factors. This article presents a haptic collaborative modelling method dedicated to the dynamic adjustment of selection area. This modelling method intends to improve mutual awareness between the partners in order to improve the collaboration efficiency.