I have a fresh installation of Liferay Community 7.3 bundled with Tomcat. I created a new site and a user and used the default Theme.

I am interested in keeping the default account settings portlet that the theme comes with, but I need to customize it and show only input relevant to my business (and also add some new fields).

Where can I find more info about how to do that or which should be the best way to do this ?