Using physics objects that are synced to other players to press the Discord Link button with cause the button to also be pressed in the other players' games that are currently present in the same scene. This results in every player having a tab opened in their browser.
Example objects that can do this are the Nerfy Gun darts, the RC Caravan and its projectiles and, in theory, any grabbable physics items such as the dice or soda cans in the Screen Sharing rooms.
This may also work with any other similar buttons such as the "Notify Me" buttons on the event board and the numbered tutorial buttons on the map of the Central Hub by the spawn.