USB HID keyboard and mouse at the same time

[aloneguid]

Does anyone know how to create a USB device that acts as a mouse and keyboard at the same time? Examples here https://github.com/micropython/micropython-lib/tree/fbf7e120c6830d8d04097309e715bcab63dcca67/micropython/usb/examples/device are excellent, but I can only manage to work exclusively as a mouse or a keyboard, but not both at the same time.

As long as I understand, I need to prepare a report descriptor in a special way, but I'm not a HID expect and not sure how to do it. Please share if you have done it before ;)