Note: Whilst the MIDI In function allows for Trigger 2 to read incoming MIDI Data and play Trigger samples, SSD5 is a better-suited plugin for this sort of application. Users can download the Free version here. https://ssd5-free.dl.drumclassroom.net/
For more information on the difference between Trigger 2 and SSD5, refer to this article.
1. In Logic Pro X, create a software instrument track.Click the instrument menu, then go down to "AU MIDI-controlled Effects". Select Trigger 2.
2. Open the Trigger 2 plugin. Go to the settings page in Trigger 2, and check MIDI in. Set the channel and note according to preference.
3. In Browser, load up an instrument, make sure audition is set to "on". Click on one of the instrument slots, and ensure the instrument plays.
4. Go to your instrument track. Right-click on the track display and click "Create Empty Midi Region".
5. Double-click the region to bring up the piano roll (Or press"P"). Here, you will be able program MIDI patterns to use with Trigger, using the note that you select in your Trigger Settings page in step 2.