Multi output device disappears from Preference panel
I have created a Multi-output device for live streaming via OBS. Right after the creation with Audio Midi setup the new device appears in the audio section of the preferences, after rebooting the computer it disappears and there is no way to get it back except create a new one.
How can the new audio device be kept in the audio panel, please?
iMac, IOS 10.13.3