In modeling, what is twofold..?

I got a job offer for a promotional calender. She said "The calendar shoot is twofold: swimwear and body paint" What exactly does that mean? Two photo shoots, one with swim suit, one with body paint. or one shoot with swim suit and body paint. or a painted on swimsuit, because I don't pose nude. PLEASE ONLY ANSWER IF YOU KNOW, I don't need opinions. Thank you.