There are two things to report: 1) capital gain on the disposition of your stock, and 2) charitable donation.
1) Capital Gain
In the navigation bar, click on Income > Investments. It will bring you to "Your Investments Profile for 2016". Make sure the check the first box. Continue with the interview to enter in the amounts related to the disposition of your shares.
2) Donations
In the navigation bar, click on Deductions > Payments Profile > Donations Profile. It will bring you to "Your Donations Profile for 2016". Assuming this is not a US donation, you would want to check the box in the 3rd row. Continue with the interview to enter in the fair market value (this should equal to the proceeds you entered in the "capital gain" section) of the shares at the time of donation as the donation amount.
