Remove from front end?

I have installed an event manager and am setting it up so that registered users can create their own events. I do not want them to have access to pagebuilder though, as it allows them to see all my templates, and anything else I have saved. I am also not sure of it's compatibility with the new extension. Pagebuilder is showing up in the "CMS Content" drop down, and is also showwing up as a button below the text editor. I would like to remove them both. In fact I would like to remove the entire CMS Content button from the editor, but when I look it up it says to disable the front end from a plugin called "editor-XTD" which sounds easy and great, however, I do not have that plugin, so I am not even sure why the drop down is in the editor to begin with. I tried installing another editor, and it broke the site. So removing access for now would be great.
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Hi
both features are coming from plugins
- plugin type "editors-xtd" called "Button - Pagebuilder CK"
- plugin type "editors-xtd" called "Editor - Pagebuilder CK"

you can use the access rights from joomla to let only the access to admins for example for those pulgins
CEd

That's what I mean though, I do not have the editor-xtd plugin. No idea how I do not have it. I wonder if I can find the plugin, install it, and then be able to use it.

first, I was wrong in my list, both are "editors-xtd" type
see the screenshot
 

As always, I can count on you. I read at least 5 forums, none of them provided a screenshot. or any description of how to get to the plugin. So here I am searching for editor-xtd and getting no results... Well thank you Ced!

your are welcome