Facing issue in operating 6 motors from AUX port of Pixhawk 2 using Dodecacopter airframe


I have recently started testing on Dodecacopter airframe. For this, I have connected 6 motors in main port of Pixhawk 2 and the other 6 motors on the AUX port.

After this on arming the setup, Only 6 motors on the main port are rotating and the other 6 which are connected to the AUX port are still beeping.

Airframe: Dodecacopter coaxial
sys_autostart: 24001

Kindly help and let me know what am I missing in this one.