Which Oven setting should I use for making pizza.    
Use the one at five o'clock. It should be the normal baking mode for most recipes anyway.   The way I read the markings is:    12 o'clock, a zero: Turned off.  1 o'clock, a lightbulb: Light on, but no heating. Alternatively, it could be a preheat function.  3 o'clock, a dripping fan: looks like some kind of defrost setting, in which the fan is on, but the heat source is not indicated.  4 o'clock, two horizontal bars: Heat from above and below.  5 o'clock, two horizontal bars: Heat from above and below, with fan assist.  7 o'clock, a horizontal bar on the bottom and a fan: Heat from below with fan assist.  8 o'clock, three shark teeth: Looks like some top-only mode, probably a broiling/rotisserie mode.    I don't have good ideas about the 10 and 11 o'clock modes, wavy lines without and with a fan - if Stephie is right in the comments and this is a combi oven, these are probably microwave modes. Else, it must be something producer specific.   For most food, including pizza, the upper+lower heat with fan assist will give the best results.  