If you follow this instruction, you will also have the option to reduce your taxes if you lived in your second home for more than 24 consecutive, or 24 non-consecutive months during the past 5 years.
The form for 1099-S is located in the "Wages and Income" tab; "Less Common Income; "Sale of Home (gain or loss)". Even though it looks like the sale of the primary home it contains the 1099-S if you just keep following the prompts.
