How do I Zoom Out

I've looked everywhere.

Every example I receive is too complex for my brain to handle.

I would really appreciate it if someone showed me how to zoom out when the player is overlapping something.

Think of it like this:

There's a castle, but the castle is too big to fit in the whole screen.

Well, I don't want the whole screen to be zoomed out 24/7, I only want it to zoom out when the player is near the castle. Or in this case, overlapping it.

Somebody please tell me how to achieve this.

Can somebody provide me with a capx and an easy explanation of how the events in the capx works?

Thank you very much.

Would you need the layout to be scaled or the layer?

Is the player centered (scrollto)?

What is the scale it should scale to when overlapping?

The events would be something like this:

Player is overlapping castle

Scale > DesiredScale

subtract something from scale