How can I use the ESP32-S3-MINI-1 on the Uno R4 Wifi?

I'm new to the Arduino and I just bought a Uno R4 Wifi with the ESP32 module added. I want to know how can it be uses as the primary MCU?

I read both of these articles and I still do not understand. I usually upload the code by plugging the USB cable into the Uno and it runs with the default MCU. I want to try programming the ESP32-S3 directly.
A solution to make it works will be nice. Maybe a straightforward code like blinking LED will be super useful for me.

https://docs.arduino.cc/tutorials/uno-r4-wifi/esp32-upload/

You can flash firmware directly to the ESP32 but it won't be able to do much. It won't have access to any of the pins or other things.

If you want the ESP32 as the main processor then why not juat get an ESP32 board.

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I'm just being curious. Thanks for the info

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