Resolved items as guided by @minrk comments

docs/source/reference/event-logging.md

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+# Event logging and telemetry
+
+JupyterHub can be configured to record structured events from a running server using Jupyter's [Telemetry System]. The types of events that JupyterHub emits are defined by [JSON schemas] listed at the bottom of this [page].
+
+## How to emit events
+
+Event logging is handled by its `Eventlog` object. This leverages Python's standing [logging] library to emit, filter, and collect event data.
+
+To begin recording events, you'll need to set two configurations:
+
+> 1. `handlers`: tells the EventLog _where_ to route your events. This trait is a list of Python logging handlers that route events to the event log file.
+> 2. `allows_schemas`: tells the EventLog _which_ events should be recorded. No events are emitted by default; all recorded events must be listed here.
+
+Here's a basic example:
+
+```
+import logging
+
+c.EventLog.handlers = [
+    logging.FileHandler('event.log'),
+]
+
+c.EventLog.allowed_schemas = [
+    'hub.jupyter.org/server-action'
+]
+```
+
+The output is a file, `"event.log"`, with events recorded as JSON data.
+
+(page)=
+
+## Event schemas
+
+```{toctree}
+:maxdepth: 2
+
+server-actions
+```
+
+[json schemas]: https://json-schema.org/
+[logging]: https://docs.python.org/3/library/logging.html
+[telemetry system]: https://github.com/jupyter/telemetry