[2nd] [P/Y] “1” [ENTER] [2nd] [QUIT] for annual compounding. Set number under quotation marks on frequency you wish (e.g. 12 for monthly). The frequency will remain on last setting until battery change. Don't forget to change frequency once you set it on default. Since it is pain in the ass and risky tactics due to time limit on examination, I'd rather advise you to set on "1" by default and then simply divide P/Y entry and multiply N entry (N x m) to get calculations done for periods different that those on annual basis.