The Add-In Manager
You can use the Add-In Manager to view what Add-Ins are available and to disable those not to be used.
Access the Manage Add-Ins dialog by selecting the Add-Ins | Manage Add-Ins menu option.
To enable an Add-In for use, select the Load on Startup check box. To disable an Add-In, deselect the checkbox.
Enterprise Architect must be restarted for changes to take effect.