A link sent me to the Schedule E worksheet where it said that the Passive Operating Loss must be entered. I don't see where to come up with this information.

Are you asking where in the program to enter passive loss carryover or how you know how much that loss is? 

Loss that is caried over form the previous year is entered in the Rental Section 

Enter prior year passive loss by selecting "I have passive activity real estate losses carried over from a prior year" on the "Do Any of These Situations Apply to This Property?" screen in the rental profile of the rental section.

Continue and the program will ask for the amount. 

To see if you have prior year loss that was not allowed, look at last years Schedule E line 21 to see if there was a loss and line 22 to see if that loss was limited (not claimed).

You can also look at the Schedule E worksheet from last year line G in the "Carryforward Smart Worksheet" section