How do I create a group channel in HMB?

hi guys.i’m using hmb to mix my thing i can’t understand right now is how to create a buss track for grouping similar elements like drums,synths etc…
i’m not talking about the 4 mixbus channels.i want to this outside them.for example i want to group 3 synths in buss channel so i can apply an eq to them or other effects.i try to set a stereo buss channel in the mixer and then send the audio from my synths to that channel but i got a nasty feedback effect.

Hi indelible.

I saw that you found some answers on the IRC chat line.

Feel free to write Harrison directly if you still have questions.

Best Regards,