Abstract: A system comprising a controller for providing and receiving signalling to and from at least one electrical stimulation, ES, system, comprising an electrode array for applying an electrical stimulation to a muscle and one or more sensors for detecting a response of the muscle; the ES system is configured to selectively operate the electrode array in one of a motor point scan mode or a stimulation mode, wherein: in the motor point scan mode a plurality of scan measurements are taken between different pairs of electrodes; and based on measurement signalling of each scan measurement, the controller is configured to identify a first stimulation electrode and a second stimulation electrode; and in the stimulation mode a plurality of stimulation signals are applied to the first and second stimulation electrodes to provide for contraction of the muscle.