Well first off, the voice chat key is now "X".
With regards to settings or setup, do you mean the actual game settings or the mp "tab" settings?
Multiplayer is not an official part of ETS2 so you will not find settings for it in game other than within the "tab" menu
https://forum.truckersmp.com/index.php?/announcement/16-ats-and-ets2-updated-but-incompatible/
This has been answered 100 times already today, please use the search function!
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