Get your taxes done using TurboTax

Still somewhat confused.  I have 1099-int with de minimus taxable interest amount on L1 ($41), tax-exempt interest on L8 ($10434) and a figure on L13 ($6422).  Do not understand how to report L13 as when I open up a second 1099-int screen and try to "adjust", the software doesn't tell me WHAT BOX to put $6422 in to adjust. Why doesn't TTax just have a box 13 for input?