Wordpress staging allows you to create a copy of your live website which you can then make changes to without it affecting the live website. When you are happy with the changes you can then push the staging website to "live".

For details on how to use the Wordpress staging feature in cPanel please check out the following guide:

https://d9clients.com/knowledgebase/328/Setting-up-Wordpress-Staging-in-cPanel.html