thanks for your answer.
In fact, I run a VR arcade location. Each VR station has a display screen, that shows a video diaporama of game trailers when no one is playing, and mirrors the game view when a player is in game.
There is no keyboard or mouse on the VR stations, and I use NoMachine to connect remotely to the stations for maintenance or technical support during gameplay.
As the display screens can be seen by spectators following the game, it would be nice if I could disable the notifications when I connect to the stations during a game session… even though this is not really an issue.