Get your taxes done using TurboTax
If you are trying to enter your prior year passive losses for a K-1 partnership, there is "Describe the Partnership" screen (see below) during your K-1 entry, immediately after the last "box entry" screen (see below). Check the line for "I have passive activity losses carried over from last year". The following screens will have boxes for your carryovers from 2018.
Here's the "Describe the Partnership" screen:
