How to enter section 199A information that has multiple entities?

You will need to enter two separate K-1 forms into TurboTax for the single K-1 you received.  Use one K-1 to report the amounts reported for the rental income generated by the partnership, and a second K-1 to report the income generated by the passthrough entity.

For both of these K-1s you need to enter, you'll see this TurboTax screen to indicate whether the income is from the partnership or from the passthrough entity.  Note that on the passthrough entity, you be asked for the name and EIN of that business.

Here are those screens where you indicate if the income if from your partnership, or from the entity that passed through income to your partnership:

For the separate K-1s you must enter for the single K-1 you received from the your partnership, enter the code Z when you enter the K-1 box 20 screen, but you don't necessarily need to enter an amount here.  Continue on, and you'll find the screen  "We need some more information about your 199A income or loss".  When you check the box next to a category on that screen, a place will open up to enter the amounts from the Statement or STMT that came with your K-1.  The applicable category (or categories) on this screen (and the following "Let's check for some uncommon adjustments" screen, if applicable) must be completed in order for your K-1 QBI information to be correctly input into TurboTax. 

To get back to the K-1 summary screen and find the Schedule K-1 to edit, click the "magnifying glass Search" icon on the top row, enter "k-1" in the search window and press return or enter, and then click on the "Jump to k-1" link to find the K-1 you need to edit.

Here are the "We need some information about your 199A income or loss" and "Let's check for some uncommon adjustments" screens where you enter the information from your K-1 Section 199A Statement/STMT: