Process of assigning a different branch as the new MAIN BRANCH

Due to DEI Requirements we don’t have Master as part of our Repos
Main is now our Term
However Master shows up in our selection as Main Branch, After renaming it in SonarQube nothing happens.
What is the process of assigning a different branch as the new MAIN BRANCH

Sonarqube Enterprise 8.9.3.48735 LTS

What do you mean by “nothing happens”?

Meaning the Branch Name Changes however its still considered MAIN BRANCH. There is no Master in Repo. For some reason SonarQube has a default MASTER. There got to be a simple why to identify which Branch is the MIAIN BRANCH in a project

Where do you still see master after the name change?