Modifying Existing Account

I have two users on my account. I would like to put my husband on his own separate account. When I try to create an account under his email account, it won’t let me because it says his address is already in use. Should I delete my account and then start over?

Your husband must have an account already under his email account. You can just use that. If neither of you know the password you can go to, choose login (log out first if you are already logged in), and click ‘Forgot password?’ in the login screen.