Peugeot 206 Factory Radio: Adjusting Bass Levels & Memorizing Stations - User Guide Needed

Hello!
Not long ago I bought a Peugeot 206 with a factory radio. At first I couldn't run it at all, I finally read a bit and it turned out that it is decoded. There was a code in the service book and I was able to code. The radio works and plays quite nicely but another problem appeared. I do not know completely how to set the bass (they are set to "max") which irritates me terribly and how to memorize selected stations.
Has anyone had contact with this type of player and knows how to go about it?
Thank you in advance for your answers and best regards!
Martyn

Come on in public.servicebox.peugeot there, select Polish, in the upper right corner you have vehicle documents, choose yours and you have vehicle instructions including radio

After turning on the radio you enter the AUDIO settings - the button on the right.
The up and down arrows (next to the AUDIO button) change the values, and as I remember correctly, each subsequent press of AUDIO changes the function or top BASS, TREBLE, etc.