Panel

Indeed, sir, the word panel may refer to a variety of things depending on the context. It could be a group of people assembled for discussion or decision-making, such as a jury or a committee. Alternatively, it might denote a flat surface, often made of wood or another material, used in construction or decoration. If I may venture to say, without further information, the term is likely being used in its most general sense, that of a group or assembly. Should you require a more precise explanation, please do enlighten me.