Ma Crossover alert

 

Hi All I am a new trader and would appreciate an assist from you experienced folk. I have downloaded the ma crossover alert indicator from this site. I am interested in setting up ma crossover alert on two ma crossover 10 periods. I want one to be a shift +8 and the other to be a shift -8. How do I program this in to the crossover alert?

Thanks a mill for anyone who can tell me how this is done