It would be nice, to extend the OpenNMS alarm list (in the OpenNMS WebUI) with the possibility to show only alarms of nodes, that are part of a specific surveillance category. This filter option is available in the Grafana Helm plugin, but not within the native OpenNMS WebUI.

I also checked the source code (https://github.com/OpenNMS/opennms/tree/develop/opennms-webapp/src/main/java/org/opennms/web/alarm/filter) and could not find a filter here.