How do I get the location of the middle distance between 2 objects?

I want to know how to get the location point between to objects so I can place a "camera" object between them, so I can place the camera in the center on the screen or between players (for an isometric game) with a transition.

That's the only way I can imagine to achieve a smooth camera for what I've read.

I've found this old post, but (though R0j0's capx is broken) what about a 4 player game? where I have MULTIPLE INSTANCES of the same object "player". How do I check for "distance(Player.x,Player.y,Player.x,Player.y), with each of them!?

https://www.construct.net/en/forum/construct-2/how-do-i-18/setting-camera-two-objects-44264