This article describes the differences between SmartBar button area and SmartBar menu counting and how these can be configured.
SmartBar button area
Shows SmartBar buttons/tiles in a defined place on a Dynamics 365 record-form.
This has to be configured directly within Dynamics 365. More information can be found in the corresponding SmartBar guide on page 22.
Dynamics 365 menu counting
Shows the number of related records directly in the Dynamics 365 menu.