Having Totalview's Doorway client mounted in your workplace's doorway staff can easily change their availability when they enter or leave the workplace. Learn more on www.total-view.com
The app can both run in a licensed mode and in a demo mode. You can try the demo just by tapping the sign in button.
Users at a company with a Totalview license can use their regular username and password to sign in and change availability. Your licence for Totalview's Doorway Client can be set up in the Settings Charm.