You can also connect all of them via USB to your computer.
Or you can arrange them in any combination.
To get you started with your synths have a look in the file section for some presets for the BC for your particular synths.
If the files are System Exclusive (sysex) *.syx you can use MidiOx if you have a PC or the Mac equivalent, or a DAW to send the files.
If the files are *.BC2 files (theses are just text files in the BC language) then you can use Mark's PC editor.
The next step is to get Mark's document on the BC language and modify or create your own BC presets.
Feel free to post any questions you have here.
All the best
Royce