for semi auto you need to open the grip and keep on pressing the grey button inside untill the light goes to double flase red,then press the power button,the yellow light should flase once when you press the power button,now you have to press the trigger to get out of setting made then turn the marker off to save the settings
as for fps you will need to have a chrono and adjust the black nut at the bottom of the reg untill you reach the fps you want,for the masters/koth it should be no higher than 280fps
hope this helps