Adjusted a 2016 Roth IRA contribution

I over contributed to my Roth IRA in 2016.  I have asked my Trustee to remove the amount over what I am
allowed.   TT, is calculating an Additional Tax on the IRA.  The IRS Pub 590 states that I can make this adjustment without the 6% penalty if done before April 18, 2017.  How do I enter the information into TT without triggering a penalty?