“Add Book Grid” Hide

Hello,
This is a great plugin you have. but, I have an issue.
I’m running an Online school, and I would like to suggest if you could put up an option in the WordPress Admin settings so as one can choose whether or not to display, or to choose which users to make available to, the “Add Book Grid” button.
The button itself is a great shortcut button, but it’s visible to all users with a rich text editor enabled, and that is what is not okay.
Thank you..