Multi-drone system using single px4

I’m trying to create a system that has 4 drones that are all controlled by one px4. Does anyone know if this is possible at all? If yes, then I’d really appreciate any help.

A drone with individual PX4 is possible.
A drone with multiple PX4 is possible.

4 drones with single pixhawk is not possible.

Maybe try to explain what you want to achieve?

PX4 must be on every drone, because autopilots contain flight sensors and directly control the controls (engines, wings, …)

Do you mean one ground station controlling multiple drones?