How to remove a default Menu Bar entry?

Question

Trying to modify the Menubar to remove Tools : Product Add-Ins : Activate Descartes 
 Anyone know what (if any) dgnlib is used to control the menubar?

Andrew Bell · Answer

As this is related to the PowerGeopak product the Installation Wizard has option in the Custom Setup that allow you to deselect either the Descartes or Subsurface Utility. I believe this should remove these entries in the menu but you might need to discuss this with the Civil Support Team to ensure this is the case. The following Wiki article discusses this but may not be exactly related to your query. Otherwise I would suspect that any DGNLIB files relating to the operation of PowerGeopak should contain these menu items. 
 https://communities.bentley.com/products/road___site_design/w/road_and_site_design__wiki/17812/separate-license-for-subsurface-utility-engineering-sue-and-descartes