A:AnswerJust press the minus sign on top of your portal machine. Unfortunately you are unable to ask ithe unit itself to turn volume down without touching
A:AnswerI have two people currently on my Portal (me and my husband). I'm not sure if there's a limit to the number of users. All users have to be on Facebook, first of all. Consequently, the users FB photos would scroll, so with multiple users, you'd have photos from everyone. That may be problematic, if there are perhaps any inappropriate or offensive photos coming from one or more of the users. Hope this helps. You could probably google this question.