The invention concerns an arrangement comprising an electrical stimulator (1), a programming system (25) for assisting a user in programming it for performing a determined body movement by neuromuscular stimulation; and an input device (24) operable by the user. The programming system is configured to: decompose the neuromuscular movement into distinct actions (31), select one of them, and configuring the electrical stimulator with the electrical stimulation parameters associated with the selected action. The programming system is further configured to select one electrical stimulation parameter among the electrical stimulation parameters associated with the selected distinct action, and, in a cycle performed while the electrical stimulator is connected to the user's body: to receive a value of the selected electrical stimulation parameter through the input device (24); and to configure the electrical stimulator (1) with the received value of the selected electrical stimulation parameter.