Hi Yahav,
The CueCore3 can record 4 universe simultaneously.
If multiple CueCore3 units then you can record more universes simultaneously using the master slave protocol.
Please note you can either only record universe from the same source at a time.
So 4 DMX universes, 4 Art-Net universes or 4 sACN universes.
Not 1 DMX and 1 Art-Net and 1 sACN simultaneously.
To record DMX, Art-Net or sACN you can go to the track page and click record.
The CueCore3 will then record your content from the selected source.
I hope this helps you.
Kind regards
Guido Visser