MuBu link buffer~ to internal buffer

Hello — I understand how to link a mubu container to a buffer~ object with an argument or a refer message. Is there a method however for linking buffer~ objects to multiple buffers in a single MuBu container?

Note that these are predefined buffer~s that are filled in real time, not sound files, so they can’t be loaded from a folder.

Thanks for any tips!

I finally found part of the answer in the abstraction — but BOY was that hard to find, even for someone who helps write MuBu tutorials…

Is a function foreseen? Or is there already a good equivalent workaround?

Thanks — C