Solved
This is under "Owner Info" on the "Review your rental property info" page. The "Edit" links under each of the other Owner Info fields work fine (owner name, etc.), but not the one for Ownership Percentage. Is there a way around this? Seems like just a TurboTax bug.
The Edit button seems to work when I attempt to use it. The only suggestions to try would be to log out and back in to your return; try a different browser; or clear the cache and cookies on the browser you are using.
Take a look at the following TurboTax help article if you need more information about how to do that:
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