In Animal Crossing: New Horizons, there are a couple of restrictions set on secondary players, aka the second, third, and so on users who play the game on the same system.
After the island representative, or the primary player has started playing the game, it’d become possible to add secondary players to the same island.
Secondary players are limited in what they can do, such as waiting for the island representative to progress in the first week of the tutorial (i.e. donating the 5 creatures to Blathers and building the museum) and not having the ability to build public project works.
What do you think?