I accidentally file someone ad a dependent and now the person can file there taxes

[VolvoGirl]

You will have to amend your return and they will have to print and mail their return this year.

You should not amend until the first return has fully processed and you get the first refund or your tax due payment has cleared.  

How to Amend this year

https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/amend-federal-tax-return-curr...