> ## Documentation Index
> Fetch the complete documentation index at: https://docs-xcor.paloaltonetworks.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Enable change events on service pages

> Learn how to enable and overlay change events on service pages in Cortex XCOR.

You can enable [change events](/overview/types/change-events) to display them on panels
for each of your services. This capability lets you visualize changes in your
environment relative to a specific service.

To display events on service pages, your organization must meet the following
requirements:

* Your organization must have an active license for the Events product, and the product
  must be active in your tenant.
* Events data must have service names provided on a metric label.
* Service name values for each event must exactly match the service name value used in
  metrics.
* Palo Alto Networks Cortex XCOR service discovery must be configured and actively
  discovering services.

After enabling change events, you can choose the category of events you want to
display. You can select a single or multiple categories. Clicking a change event from
a panel gives you the option to open the event in Changes Explorer to view the full
summary for that event.

Enabling change events on service panels also adds a **Change Events** table to your
service page that contains a list of events related to the selected service. Clicking
a change event from the table opens a panel for the specific event that displays the
full summary.

To display change events for services:

1. On the [Services](/observe/services) page, click any service's **Name** to open
   the service's detail page.
2. On the service's detail page, click the **Change Events** toggle to enable change
   events for that service.
3. In the **Category** dropdown, select the change event categories you want to
   display on your service panels.
4. In any panel, hold the pointer over a change event to display more details for a
   particular change event.
5. Click the change event to pin it, and then click **View details** to display the
   full [change event details](/observe/enable-events/use-events#change-event-details).
6. In the **Change event** drawer, click **Open in Changes Explorer** to open the
   change event in Changes Explorer with the full summary for that event.

From Changes Explorer, you can [filter](/investigate/querying/filter-events)
specifically on services by including `lens_service` and the name of the service you
want to display. For example, the following filter displays all `deploy` events for
the `auth` service:

```text theme={null}
lens_service = "auth" AND category = "deploys"
```

Change events also display in a table pages for individual services. The information is
similar to the change events list in
[Changes Explorer](/observe/enable-events/use-events#view-change-events),
but is filtered to the selected service.


## Related topics

- [Enable change events on dashboards](/observe/enable-events/dashboards.md)
- [Overlay and enable change events](/observe/enable-events.md)
- [Enable change events on traces](/observe/enable-events/traces.md)
- [Service pages](/observe/services/service-pages.md)
- [Extend services](/observe/services/extending-services.md)


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