How to enter cost for mileage for volunteering

[sarosenthall]

I am using Turbo Tax Home & Business.  I understand that I can take my mileage used for my charitable work on my Schedule A.

What I am confused about is how I enter it, in the Step by Step section when I am working on my Donations.

I accrue the mileage for a number of different organizations, with multiple trips throughout the year.

Should I just add a new charity that I call: Mileage for charitable work?

If so, do I put the cost as a "cash contribution" or as an item I donated?