I am not sure if I am fully understanding this, but if you want the visibility control inside the CMS editor the best thing would be to make “a hidden variable”.
To do this, I like to create a text block field named “Visibility” (or whatever you want) and inside the text of the item put “true” or “false”
In the CMS item itself this is where you want to change true/false:
after add your condition on the item wrapper or what ever you would like hidden.
The below example shows the grids are hidden if they are false. I could have placed it on the wrapper if I wanted to completely remove the item, however, for this example I wanted to keep the event titles.
After you have done this, you can go back into the CMS item, and change the condition to … technically anything but true for it to disappear.