Popups can only be created on pages tab

[JessicaFrank]

In 4.0, you could create a pop up on the fly within the question design window (when you clicked the P you could create new popup and attach it to a word/section of a question).

In 5.0, you have to create the pop up first in the pages tab, then associate it with a question in the question design window. This isn't an intuitive workflow for authors.