Hey, just wanted to add some more info
The best place to do this is in the BBMO so you can edit the actual file. That being said, you can use the mixer in the BB plug in to do so superficially, but changing mixer volumes in the plug in does not alter the DRM file in any way. We also do not yet have a “save” or “preset” function on the plug in making your changes potentially disappear when reopening the session/drum set. This is why editing in the BBMO is the best way to make a change you want to keep in perpetuity.
A nice way of doing this is using the mixer in the plug in while working in your DAW and then using the new values you set in the plug in as the set values for the DRM file in the BBMO. Version 0.0.9 has volume information windows under the instrument faders and meters.
For example, say you are using the plug in and you want to bring the closed hihat down to -6dB, you would go to the BBMO, edit the same drum set, and set the hi hat closed instrument to -6dB.
I will also add that if you are loading the DRM files on the plug in directly from your DRUMSETS folder in your project, you can see the changes made in the BBMO reflected by selecting a different drum set and reselecting the one you want to use.
If you have made an external folder with your DRM files in it, you will have to re-export the drum set with your new mix into that folder.
Hope this helps!