Event Co-relation with Check_MK

Thanks for the response. I have the piggyback option enabled for the VMWare environment and the Citrix environment with the help of inbuilt plugin that we have in Check_MK.
Tried to create a BI aggregation and Nagvis Map view to visualize the Parent Child relation in order to use it for Event Co-relation but no luck.

Any thoughts on this please. How to use this.

Thanks, Praveen.