Kinda a two part post.
Currently the Sampler Track Inspector doesn’t allow you to set a Drum Map for the Track and it should. Really any Track type that uses MIDI should let you set a Drum Map just like on an Instrument or MIDI Track.
However there is currently a somewhat stealth way to set a Drum Map on a Sampler Track.
- Create a MIDI Part on the Sampler Track
- Open the Part using MIDI>Open Drum Editor
- In the lower left section of the editor is a dropdown where you can set (or create) a Drum Map
- Setting a Map here will set if for the Track