If your client is older than 70 1/2 and the amount is not over $100,000 it is tax free and counts toward RMD. If you scroll down on the 1099R worksheet to " Qualified Charitable Distribution" you will see where to put the amounts. You cannot put it on schedule A also. here is the IRS site to read up on it.

https://www.irs.gov/retirement-plans/plan-participant-employee/rollovers-of-retirement-plan-and-ira-...