Jennie here from the Customer Experience team! 
Are you using our Sandbox to test features from the perspective of different users or user levels?
I have a tip that will help you easily and quickly move between multiple user accounts (beyond using the 'log in as user' functionality) without having to open multiple browser windows! 
Have a look at this quick video and give it a try! Here are instructions on how to set this up.
If you have any questions or feedback, pop them in the comments below.
Thanks!
