Bluetooth HY-BT-401 --> how to activate mode Slave?

Hello everyone,
I bought a BT-401 module
official pdf:
https://www.hyxkiot.com/tools/download.ashx?site=en&id=23

I connected TX, RX, 3.3V and GND.

Unfortunately, I'm too weak in electronics and now I don't know how to start the AT COMMAND mode and how to enter the SLAVE MODE
Has anyone had contact with this module and knows how to run it?
I want to use it to connect the arduino to the gamepad :wink:

Thanks in advance to all for help

Not the same module but this could help you get started. I didn't see anything in the datasheet referring to slave mode either.