A default toolbar configuration is stored by Microsoft Dynamics GP. Each user begins with a copy of this default configuration, which they can customize to meet their needs. When a user logs into the system, their personal toolbar configuration is used.
When you add toolbars and toolbar items, you will add them to the default configuration. The items you add can also be replicated for each user defined in the system, allowing all users to have access to the toolbars and toolbar commands.
It’s important that you add your toolbars and toolbar items for your integration only once. You should not add items each time Microsoft Dynamics GP is launched. Use the ExistsForUserID() function in Microsoft Dynamics GP to verify whether toolbars have been defined for your product. Use the ButtonsExistForProduct() function to verify whether toolbar items have been defined for your products.