If you wish to have separate outs for AD2 running inside Cubase 8 and later here are the steps to follow. First set up AD2 onto an instrument track in Cubase. Then click on the Kit Page in Addictive Drums 2. By clicking on the small arrow beside each kit piece fader you can enable a separate output and select how you want to route the separate output for that kit piece.
Next you will need to set up tracks in Cubase for your separate outs to be assigned to. In the Inspector view for the AD2 track you will see Addictive Drums 2 listed with a small arrow coming out of a box. This allows you to Activate Outputs. Clicking on this will reveal the outputs available. Please select those that you wish to have and you should see new tracks created in Cubase in the mix console.
Play a MIDI beat in AD2 and check to see that the corresponding kit piece levels are shown in Cubase in the new outs you have created.