It's pretty much simple to understand how the Main Panel works. For example, the Ring tray is where you put your rings and get it working on the battlefield. The PDA button opens up your PDA to track down where your location is, and, most importantly, the Health & Stamina Meter(The Red Heart and the Blue Rectangle on the side of the Ring Tray) shows your current Health Points and if it is low or not. Simple? Well, the Main Panel has the "Game Options Menu" wherre you can adjust the default settings and enhancements in the game.