What does the "Override" button do in joy.cpl?

[Alex Henrie]

While looking at the new messages to translate for Wine 8.0, I noticed
several like this:

"No user detected on slot #0, make sure your gamepad is plugged in,
and not overriden for DInput in the Joysticks tab."

Leaving aside the misspelling of "overridden" in English, I want to
make sure that I translate this text intelligibly into Catalan. I
assume that the message is related to the "Override" button in
joy.cpl. What exactly does that button do?

-Alex