I sold a home in a 1031 exchange and purchased 2 other properties with the gain - how do I add in the second property that I purchased?

This is something the TT program will not do for you automatically ... you must use one of the downloaded programs and  make direct form entries (that you need to calculate) in the FORMS mode.   I highly recommend you seek local professional assistance   OR   upgrade to the LIVE online option to get a professional to do this if you are not 100% sure of what you are doing.