It's really odd that the option isn't showing up for you. Now, when you're looking for this, the Slingbox is already active and streaming in the back ground right? If not, it may not be fully connected to the unit which would explain why the options aren't showing up.
Please let us know!
I have a SlingBox 500. After consulting the documentation ( Slingbox.com - Giving a guest user access to your Slingbox 350 or Slingbox 500 ) of how to add a guest, Neither does the Guest+ option appear at the top of my on-screen menu or does the Setting option appear in the directory in my SlingBox web account (only shows "Watch").
The screen captures do not match what I see. I have upgraded all software. So what do I need to do to get these options or icons to appear?
Please help as I am at a loss...