If you have already filed your return you would need to Amend to add a dependent.
Click My
Info on the left panel. You should
be at the page that has all your personal information and your dependent that
you entered should be listed. Click Add a dependent.
WAIT until you receive your refund and then
Amend.
Follow these
instructions to amend :https://ttlc.intuit.com/replies/3288565
