IP PIN enter in Intute Turbotax

I am trying to help my brother-in-law to file his tax return using intuit TurboTax . I have already filed mine. This is the first time I am using this software, so I am a new user. His tax return is rejected from IRS for not entering IP PIN ( I have his IP PIN on my hand). I didn't find a place to enter this when I file the return to begin with . I tried to find a way to enter this information and re-submit the return but no luck. Please help me how to enter this IP PIN for my second return. 

 

Thank you.