Multiple EventSources in a EventHeader

I want to trigger a alarm or AnalyticsEvent and have multiple cameras related, so the operator can easily see all cameras in the Alarm Manager. How can I achieve this?

By design an AnalyticsEvent or Alarm can have only one source.

However you can associate multiple cameras with the event or alarm by using ReferenceList..

https://doc.developer.milestonesys.com/html/index.html?base=miphelp/class_video_o_s_1_1_platform_1_1_data_1_1_analytics_event.html&tree=tree_search.html?search=referencelist