The RichExchanger exchanger sсript has a function for displaying indicator icons.
The function for displaying indicator icons in the admin bar is located in the CMS itself. It cannot be enabled or disabled separately.
Indicators are pictures with the number of new actions. For example, if someone added a review to the site, a review indicator with the number of new reviews will appear. If you click on the icon in the admin bar, a quick transition to the new reviews page will occur.
Indicators are very convenient to use, but they cause additional load on the server. That is why there is a settings page for displaying indicators. On the settings page, you can prohibit the display of a specific indicator.
To get to the settings page, you need to click on the indicator icon.