Docs: enhance disabling presence indicator content (#75647)

* docs presence indicator disable flag

* Edited

* Fixed typo

* Fixed typo

---------

Co-authored-by: Isabel Matwawana <isabel.matwawana@grafana.com>
Co-authored-by: Isabel <76437239+imatwawana@users.noreply.github.com>

docs/sources/dashboards/assess-dashboard-usage/index.md

@@ -95,10 +95,23 @@ To change _recent_ to something other than the past 10 minutes, edit the [config
 
 ```ini
 [analytics.views]
-# Set age for recent active users
+
+# Set age for recent active users to 10 minutes
 recent_users_age = 10m
 ```
 
+To disable the presence indicator, edit the [configuration][] file as follows:
+
+```ini
+[analytics.views]
+
+
+# Disables the presence indicator
+recent_users_age = 0
+```
+
+The dashboard won't show any avatars and thus no recent user activity.
+
 ## Sort dashboards by using insights data
 
 In the search view, you can use insights data to help you find most-used, broken, and unused dashboards.