There is two ways to change event name depending on if the event site is published or not.
If the event site is not published you can change it under ‘Overview’ > ‘Add your info’.
To change the name once event site is published you follow the steps below:
Go to ‘Settings’ > ‘Setup’
Enter new name under Event name
Click ‘Save’.
When you change the name of the event it will be the new default for the title in the header unless that is changed within the header-block.
No matter how you change it, important to think about is that you will also have to update the domain yourself if you want it to match the event name. Read this article on how to do that!