How do I change print head voltages on an EFI Vutek H5?

Hey folks, I just wrapped up replacing a print head in one of our H5's. I'm stumped when it comes to inputting the new print head's voltage into the Vutek UI. When I'm under the "Print Heads" tab, I can see voltages, targets, temps, etc., but I can only change the Calibration or Target Temp. I need to be able to adjust the Target, but can't figure out how to. Any help would be very much appreciated. I've worked on other EFI equipment (Pro 30f, H2000, 1625LED, 652) and have never had issues changing the voltages before.

Pictures of print head voltage menu

Thanks in advance for any help!