It’s a bit convoluted. You can’t just right-click on the Piano Roll and select “Drum Map”, unfortunately.
The Drum Map editor view is tied to a setting in the Preset. To enable the Drum Map editor view, right-click on a Preset and select “Properties”. On the right-hand side of the properties window, select the “Use preset as a drum kit” option.
You’ll then be prompted to create a generic drum map for the preset, which can be a good or bad thing depending on whether the VSTi conforms to general MIDI drum mapping.
Click “OK”, then create a segment on the track that contains your VSTi, and open the editor. You should then see the list of drum map names down the left-hand side of the editor.
Cheers,
Malcolm.
.
