So this does not work for me via the internal settings. The different modes also work without a device, so the unpaired AirPods can already operate noise-cancelling. So this certainly doesn't work either. The different types of number presses can be changed at will via a suitable app. However, usually only in combination. For example, you can overwrite or combine play/pause with any command. However, the AirPods always remain in sync. A long press switches to another mode. Short (multiple) presses trigger a command.