Manually set cover calibration time in zigbee2mqtt

I’m going to finish my shutters’ motorization soon. I have 12 window shutters, all of them the same. Same motor, same size. I’d like to set the exact same calibration time for all of them.
The cover module is QS-Zigbee-C01 by Lonsonho. To calibrate one module, I have to switch the Calibration on, then make an Open-Stop-Close-Stop cycle. If I do it for 12 windows it will set 12 different time for the shutters. I’d like to set the same.
I think I have to call a, MQTT Publish service, but I don’t know what to write in the given lines, like: Topic, Payload and maybe in QoS.
Can anybody please explain it to me?

The available topics are detailed here Lonsonho QS-Zigbee-C01 control via MQTT | Zigbee2MQTT

Also worthy of reading: MQTT Topics and Messages | Zigbee2MQTT

Thank you! As I can see it it not possible to set the calibration time directly :frowning: