Merge pull request #5792 from EnterpriseDB/content/docs/biganimal/pem…

…x-update

BigAnimal's Observability feature update

product_docs/docs/biganimal/release/using_cluster/05_monitoring_and_logging/monitoring_using_biganimal_observability/index.mdx

@@ -58,7 +58,13 @@ By default, these charts displays the historical data of the last 15 minutes. To
   - **Active connections** (line chart) — The current number of connections between the client applications and the Postgres cluster.
   - **Disk throughput** (line chart) — The amount of data transferred to and from the disk per second for the Postgres cluster.
   - **Database size** (line chart) — The amount of storage volume used by the Postgres cluster.
+  - **Session wait states** — These charts are powered by [EDB wait states](https://www.enterprisedb.com/docs/pg_extensions/wait_states/). They include:
+    - **Wait times** (line chart) — The approximate wait times for different wait events in a Postgres database, in seconds. This chart groups each wait event type to make it easy to compare and identify potential system issues.
+    - **Wait events** (line chart) — The approximate wait times of wait events in a Postgres database, in seconds.
 
+    !!!note "Important"
+    The EDB Wait States extension is enabled by default because it's needed to collect the data for session wait states charts. This extension gathers detailed information about the active sessions, including wait events. This information is then used to create charts for diagnostics purposes. For more information on enabling/disabling the extension, see [EDB wait states](https://www.enterprisedb.com/docs/pg_extensions/wait_states/installing/).
+    !!!
 
 ## Features for both types of charts