Hi !
Currently you can choose mono or stereo, mono will send the same sound on all the BS, Stereo will redirect positional effects to left and right (road vibrations) respectively, non positional effects will be spread to all the BS.
For the frequencies they can be configured on each effect :
View attachment 248873
I'm working on the next version with more control, i've added the 4 channels support, I'm currently working on adding corner effects, and it will be possible to balance all channels :
View attachment 248871