In Filebeat and Winlogbeat, the configuration files have separate sections for output.Elasticsearch and setup.kibana. It was easy to figure out where to put the Elasticsearch host and the Kibana host - which are 2 different values - in the config file.
Now I am trying out Audit.NET which is built on top of NEST. The NEST documentation says to enter the Elasticsearch URI in the ConnectionSettings. However it says nothing about configuring the Kibana host.