Are there 2 belts needed on my LSS sprchrg. 1 accessories/1 supercharge

What is your question?

I was driving it, one of the belts came off, I've tried numerous times to put the belt back on but it is WAY to long. I have no idea how it was running, I can tell you there were problems with the way it ran, But the one belt that is still on it is going around the supercharge part which is NOT in line with the other pulleys, but it was running like that. Please help I'm a girl trying to work on a car because I CANT AFFORD WHAT THE SHOPS CHARGE TO FIX IT. PLEASE HELP!!!!