Volume up/down buttons on keyboard

[Pretous]

Hello, I come here to ask you for help with my problem:
When I connected 2 keyboards for 2 terminals I got problem with volume up/down buttons. It don't matter on which terminal I attach keyboard it always set volume only on terminal 1.
Have anyone solution for that problem ?

[beast2040]

Please note - when you connect a keyboard, several devices appear in the ASTER settings, for example keyboard + keyboard + mouse. This means that the device is composite and all its parts should be assigned together.