To do a Qualified Charitable Distribution, you must actually be 70 1/2 years old on the date of the distribution. If it was not a QCD, then you must enter the 1099-R for the distribution on your tax return as if you received the funds in your account. You can then itemize deductions and claim the deduction as a charitable contribution on your tax return.
For reporting a Qualified Charitable Distribution, you should have been presented with the Transfer to Charity? (see screenshot) page in the follow-up to entering the Form 1099-R. Simply indicate the amount that was transferred from the IRA directly to the charity.
Tax only asks the charity question if the distribution is from a traditional IRA and you were age 70½ or over. For other types of accounts or if you were under age 70½ you'll need to report the distribution as a regular charitable contribution deduction on Schedule A.
[Edited 04.12.19|3:00pam PST]
