Hiding the DesignPLUS launch button but leaving the Multi-Tool and Upload/Embed Image Tool available is a popular option. This setting requires users to know the keyboard shortcuts to get into the RCE DesignPLUS sidebar. Hiding the launch button can be done in two different ways.
Account Settings Page
If you have access to the Primary or Extended Customizations course, you can make this change in the Account Setting Page. See our Admin Guide: Instructions for Customizing Account Settings under the panel Limit Access: Hide Launch button for these instructions.
Global JavaScript
To do this, you will need to access your global JavaScript in the Canvas Themes.
In your global JavaScript file, there is a line that says:
hideButton: false,
Just change that to say:
hideButton: true,
Upload the updated file to the Canvas Theme.