What is the groups function in Maestro?

Apogee's Maestro comes with the ability to "group" your inputs to make fine adjustments to your input level across many channels at once. Whether using a stereo microphone pattern (XY, spaced pair, MS, ORTF) or a pair of microphones or a stereo microphone (RODE NT4, AT4050ST) adjusting the input levels for multiple inputs can be a tedious process. Just click the group box on the Master input tab, and assign the intended channel to any of the available groups. Both instrument and microphone channels can be grouped.