how do i add an additional itunes account under mine for my children
How do I add an additional itunes account under mine for my children?
iPhone 6, iOS 8.3
If you are using Family Sharing and want to create new child accounts for them : Family Sharing and Apple IDs for kids - Apple Support
About family sharing : http://www.apple.com/icloud/family-sharing/ and Family Sharing - Apple Support.
Without family sharing you can only create separate adult accounts