This is slideshow controller for PowerPoint, it is very easy. You need both app on PC and mobile.
Before setting, your smart phone and computer must connect to a wifi access point.
Step 1. [Computer] Download, install and run application, select a your IP Address and start server, you will see QR code show on screen. https://app.box.com/s/ul500eycyahxl8jwdttwv746xh9vhieo
Step 2. [Smart Phone] Swipe left to right do open menu, select "Connect To" do scan QR code, you must scan QR code shown on Computer.
Step 3. Run PowerPoint and enjoy.