How to add an USB joystick to New Picade for two players games

Hello everybody,
has anyone added a usb joystick to the New Picade to allow two players to play at the same time?
If so, how?

I tried setting them up on Retropie / Emulation Station in Configure Inputs but they both only move player 1.

Some idea?

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I just plug my Xbox 360 controller into the Pi and set it up in emulation station. I had no problem playing two player games like Street Fighter. It was just plug and play.
Use this photo as a reference when plugging in the second controller. sddefault

Plug in the second controller to the 1 port.

I plugged my USB Gamepad in port 1, set up with emulation station but unfortunately it works as an alternative to the Picade commands, so as player 1.

Do I have to configure something else?