Change WordPress URL (admin) from .com to .com.br

Hi,

I have this new client website that I’m developing and is running in both domains (ex: http://tatianavianna.com.br/newsite/tatiana-vianna/ and http://tatianavianna.com/newsite/tatiana-vianna/)

Wordpress admin os running on .com domain, but I want to change it to .com.br (it’s gonna be the oficial website domain). How can I do this?

Changing the WordPress address and Site address on Settings > General is correct?