The young mobile technologies, i.e Bluetooth or Wi-Fi, suffer of limitations and problems especially if the net is composed by many nodes. This trouble aspect affect also the design of Mobile Information System based on wireless networks. Our research focuses on the management of a business process in a mobile environment. This paper is about an approach to divide an unique workflow in different autonomous workflows each one controlled by a different actor. This fact allows the actors independence and the net partitioning limiting the number of hosts working in each subnet. The presented delegation model supports disconnected characteristics and the independent execution of the workflow parts that means the hosting of an independent engine in each controller. The mobile scenario and the necessity of the more automation lead us to choose BPEL4WS as language for the process definition.