You can initiate Multiplayer by interacting with the Magentocrystal in your house or by using the Magentocrystal from the last tab of your bag at the very bottom. The only way to use MP is to either use two sets of two joycons, a Pro Controller (or two, or with a set of joycons), or one set of joycons (with one controlling the player and one controlling Soleil). Shortly after, Multiplayer will be unlocked. If you interact with it everyday, Soleil comes out after about a week. When you have it, it will be placed in your house when you go to sleep. Upon entering the mine for the first time, you will get the Magento Crystal.
You can unlock Soleil for Multiplayer mode by repairing the mine and Gus's home in the mountain region and acquiring the hammer from doing so.
Time doesn’t move, nor do you need to worry about your stamina. She will give you ten more free cabbage seeds. Instead, plant the rest of the seeds she gave you, and then talk to her again.
Afterwards, she asks you to check out the house. While you are learning how to plant crops, Jeanne will walk you through the steps to plant the cabbage seeds she gives you.
