This, from IRS Publication 526, Charitable Contributions:
Cash contributions and out-of-pocket expenses. Enter your cash contributions, including out-of-pocket expenses, on Schedule A (Form 1040), line 16.
To enter out-of-pocket contributions in Turbo Tax,
Go to Deductions & Credits.
Go down to Charitable Donations.
Click Start or Update by Donations to Charity in 2016.