1. An apparatus for controlling a plurality of laser sources, comprising: a controller coupled to the plurality of laser sources, the controller configured to individually control the output of each of the laser sources independently; the controller further configured to determine by summing the output powers of the laser sources and provide a total output power of the plurality of electromagnetic energy sources; a computer-human interface display device displaying a user interface region, the user interface region including: a pie-graph configured to display the total output power of the plurality of the laser sources, the pie-graph including a radius that indicates the total output power and a plurality of sectors that indicate percentages of the total output power contributed by each of the plurality of the laser sources; the user interface region being configured to receive an input, the input being an interaction with the pie-graph that changes one of the radius or a sector of the plurality of the sectors; and the controller configured to adjust a power output of one or more of the electromagnetic energy sources based on the input; and wherein the pie-graph and controller are configured such that: a) changing the radius of the pie-graph changes the total output power of the plurality of the electromagnetic energy sources; and b) changing the one of the radius or the sector of the plurality of the sectors changes a percentage of the total output power contributed by one or more of the plurality of the laser sources and adjusts the power output of at least one of the plurality of the laser sources relative to at least another of the plurality of the laser sources.