IS/CF treatment of amort premium/disc

Where is this shown on the I/S and where on the CF stmt? On the CF statement its just part of the coupon paid in CFO, right?..or it can be split between CFO and CFF? How about on the Income statement how is this handled? Ive seen before where people use the coupon on the inc statement and then will add back the non-cash amort part back under CFO. I know people in finance do this a bunch of ways…so wanted to see how the CFA handles it… Any help would be great!