I have a qualified div box 1b. Turbo is asking for 60/90 holding period. I don't know where this info is on my statement

the box  that says "some qualified dividends didn't meet...." was checked. Where did this info come from? 

TT gets no indication from the broker about holding periods and some financial institutions may be doing nothing about this until the regulators require it.  Only the financial institution can answer if it adjusts the qualified dividend box for those that don't meet the required holding period.  If so, then no adjustment by you is necessary so go back and uncheck the box. if they don't ask where the info is on the 1099. I have never seen such info on a 1099. My guess is, if they don't, there is no info on the 1099 and you must make the determination yourself for each dividend included as qualified.