Here's what I do to side chain.
1. I assign a peak controller to what I want to be controlling the side chain. (the kick, ect)
2. I pull up the peak controller and set the base to 20% (That way if you link it to a channel, the volume is at 80%, or the default volume)
3. Make sure you uncheck "Muted" so you can hear the kick.
4. then I go to the instrument that I need to be side chained in the step sequencer (the bass or what not)
5. Right click on the "channel volume" of the instrument and click link it to controller.
6. Under "Internal Controller" go down to your Peak Ctrl (YourChannelNameHere) PEAK+LFO
7. Click the drop down arrow right next to "Mapping formula" and choose "Inverted"
8. Hit accept.
Now all you have to do is adjust your peak controller to the settings you like and there you go. Sidechaining!