Working with Content Editors
Which Content Editor should you use?
But we prefer to use the JCE Content Editor and so we focus here on how to use JCE to edit website content.
JCE v TinyMCE
The default content editor in a Joomla! CMS website is TinyMCE.
If you choose to install the JCE Content Editor then you will need to assign it as the DEFAULT EDITOR in the GLOBAL CONFIGURATION screen of your website dashboard.
You should also check that the Default Editor is the one assigned to each User.
Using the Content Editor