Because of the way Nakalyne works with note information. NoteGate was devised to provide a way to stop and start "flow" of notes to different machines from a single source of notes, such as a NoteTracker, hence the name.
The first step is to add the machines for this tutorial, which are the NoteTracker, two NKS0s, and a NoteGate.

Connect NoteTracker to NoteGate, connect the NKS0's to Master with a swift shift+drag action over the machines, no pins to worry in these cases. And then click on NoteGate to "pin expand" it:

With the pins exposed, connect pin 1 from NoteGate over to the top NKS0, and then connect pin 2 to the other NKS0, the rest of the gates aren't needed.

Now we click on the NoteTracker to bring up the empty pattern, and use the cursor to go over the [+] and push spacebar, a menu pops up, and select "Channel 1". Do the same with "Channel 2".

Open the parameter window of NoteGate by double clicking on it.
Press the Play button in the toolbar of Nakalyne, otherwise the rest of the tutorial won't work (automation won't be sent from the NoteTracker in Stop mode).
Back at the pattern view, fill in Channel 1 and Channel 2 with 00, which demonstrates that those two parameters will shown as "off".

Set Channel 1 to 01 to turn it on, sounds will come out of only the first NKS0.

In wrapping, this shows that another pattern can be made which sends notes only to the other NKS0.
