How to pass data to kibana and how to create kibana visualization

Dears

I am trying to use Kibana Network plugin for below use case,

Show nodes and show relation between them based on node port utilization.

For example I have node1 with p1 port and node2 with p2 port
I understand I can send below data to elastic search

nodename, port name, port utilization metric

How can I choose Buckets and Relation in kibana, please advise.

The report names the Kibana Network plugin and Elasticsearch fields, but no files, tests, or code entry points. Start by reviewing how the plugin exposes bucket and relation configuration and how the listed node, port, and utilization fields are represented. Done would require a clear, reproducible explanation of the required data shape and visualization settings.

Written by the indexing model from the issue text.