Open your Chrome
Click the avatar
Click "Manage people"
Click "Add person"
Enter a name and choose an avatar
Keep the checkbox selected if you want to create a desktop shortcut for this user
Switch instances from here
Also, you can switch instances from here
Click "Creator" if you want to work as a creator
You are using Creator profile in a separate Chrome instance
In the lower right bottom, spot your creator widget
Click "Player" if you want to work as a player
You are using Player profile on a separate Chrome instance
In the lower right bottom, spot the player widget