That depend on the age. A qualifying child must be (a) under age 19 at the end of 2018, (b) under age 24 at the end of 2019 and a full-time student* for any part of 5 months of 2019.
If they meet those requirements be sure that you choose "Other person" and grandchild from the menu and "NO" they did not support themselves.
A qualifying relative can be any age, but have other requirements.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
