Spawn object triggers will spawn one object per player in the instance.

Example world:

wrld_9a224f48-5982-45d5-89ac-f49f022925c6

Two buttons. One spawns a prefab, the other spawns an object from the scene. Join with multiple users. Have one click the button. Observe that a sphere will spawn per player. Expected result is one sphere spawns per click of the button.