The user profile page allows you to change your name, surname, email address or the preferred language, as well as your password.
My user profile
Talking about the preferred language, by default every user created or invited in a Organization will use the language defined by the Organization itself. However, each user is able to change this setting and select between the available languages.
If your user can access two or more Organizations, a list of the Organizations with access will show up.
You can set which one is your default Organization, which will be the one you access on every login.
Also you can switch between Organizations from this list.