I have just installed iShowU per the instructions, and I can capture audio. However, I no longer have volume control of the output device. IT looks like the multi-output aggregate device doesn't provide for volume adjustment, at least using the standard volume slider (much like my LG monitor doesn't, because there are controls on it to regulate the volume).
Am I missing something in the setup to support enabling this? I also can't adjust the volume for the Mic 2 selector in OBS.
Am I missing something in the setup to support enabling this? I also can't adjust the volume for the Mic 2 selector in OBS.