#$%^&*AU2020223771A120200917.pdf#####APPARATUS AND METHOD FOR TREATING MULTIPLE TUMORS IN PATIENTS WITH METASTATIC DISEASE BY ELECTRIC FIELDS ABSTRACT An insulated electrode sys-tem for delivering a plurality of tumor treating electromagnetic fields including an array of electrode elements for proximate location on a body of a patient. Each electrode ele-ment of the array having an insulation layer. Each electrode element being independently electrically accessible and configured to be dynamically assigned to emanate an electro-magnetic field relative to at least one other of said electrode elements.