Use the Ribbon Workbench to hide the add new button depending on the form subgrid it is on. source
Use the Ribbon Workbench to hide the add new button depending on the form subgrid it is on. source
Learn how to move a managed Command Bar buttons to a flyout menu to save space source
Hide managed buttons using Hide Actions source
Overview of the new Ribbon Workbench 2016 User Interface for Dynamics CRM source
How to download & install the Ribbon Workbench 2016 for Dynamics CRM source