Hey Roumata,
I am also new to DCS world and I own only the M-2000 which I fly exclusively.
I found the below manual very useful. Not only functions and procedures but also key bindings for your HOTAS.
In part 9 of the pdf manual you will find answers to your question.
https://www.mudspike.com/chucks-guides-dcs-mirage-2000c/