Online versions do not support 3rd party designee.
With the desktop version the 3rd party can be added in the forms mode on the "Information Worksheet" part VI and does not require any override. (Online has never had a forms mode or supported items that require it).
(There are numerous less used items that can only be done on the forms.)
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
