Add anothere person to a already shared bankaccount

Does anybody know if it’s possible to add another person to a already shared bankaccount? And if yes .. how do I fix that? 😊 thanks!!!!

Hi there 🙌,
at this knowledge link there I think you will get the info you need on accounts sharing:

Looks like it is possible to share an account with multiple people only at sub account creation.

Good luck 🍀
Regards 🌈
GG