An apparatus and method optimizing complex channel configurations to produce minimal channel interactions is provided. The method includes selecting multiple channels from a channel configuration including a plurality of channels, each of the plurality of channels includes multiple electrodes. The method also includes measuring an interaction between selected channels and determining a significance of the measured interaction. The method further includes adjusting a focus of the channel configuration based on the significance of measured interaction, wherein the focus of the channel configuration is not adjusted if the interaction between the selected channels determined to be insignificant. The measuring, determining and adjusting is repeated until the interaction between the selected channels is determined to be insignificant or the magnitude of the interaction is determined to be minimized, thereby optimizing the channel configuration for the selected channels. Another set of channels from the channel configuration is selected and the measuring, determining, adjusting and repeating is performed for each set until full channel configuration is optimized.
