How to intercept kibana request from ES to use only a subset of data

Hi,
I'm trying to intercept Kibana query to ES. I need for the Dashboards only to use a subset of documents as it's DATA. This can't be achieved as a dashboard filter.

How can this be achieved? Do I need to intercept the query? how do I only use a subset of the index data for the Kibana visualizations?

Thanks

On filters if you click Edit as Query DSL you can write your own query to get that subset you need.