Splitting/mapping plugins by octaves

I have my MIDI keyboard, and I don’t understand how can I bind different plugins to my pads and to my keys.
What should I use, to select a range of notes and bind it to a specific plugin?

Using “Akai MPK 25”

Can filter incoming MIDI on tracks by placing the appropriate plugin in front of the appropriate plugin on that track. If talking about instruments, you can then use multiple tracks with different plugins on each track and different filtering for the track for instance.

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