In the rental entry section look for the assets section after the income & expenses section ...

This?  Then what?

EDIT: It doesn't look like my image is showing. "Describe this asset" is the screen.  Is it Intangibles, Other Property?

Thanks so much!! Got it now!

there was a bug in Turbotax that only allowed types M & N for the asset after clicking on the asset entry worksheet. It may not be fixed as yet.