How can I report the sale of secondary home, I've sold two houses in 2018 , but the TT don't let me to report one as a secondary, both forms marked as main residences?

There is no provision in the program to report the sale of the secondary residence, after reporting the sale of the main house  i tried to report the sale of the second, but the second form is marked as main resident and I've not found the way to edit it