Turbo tax return for child

I've been using Turbo Tax for years. This is the first year that I will have to complete one for my son, who is 18 and in college. The only things that will be on it are a 529 distribution and interest received. Can I do this on my TT account or will I need to create a new one for him?  Are there any issues connecting my checking account with it to pay any money he might owe?