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. Create one MIDI track, and one Instrument Track. Insert Trigger 2 as an insert on the instrument track.
2. On the MIDI track, set the output to "Name of Inst Track" - Trigger 2 and for channel, select the channel that corresponds to what you selected in your Trigger Settings page in step 2.
3. Go to the settings page in Trigger 2, and check MIDI in, set the channel and note according to preference.
4. In Browser, load up an instrument, make sure audition is set to "on". Make sure your instrument track is set to record-enable (⇧+R). Click on one of the instrument slots, and ensure the instrument plays.
5. You will be able to play Trigger samples through MIDI, by programming midi patterns on your MIDI track, using the note that you select in your Trigger Settings page in step 2.