let me understand. do you want to display Field1 values with Date fiels greather than the clicked value clicking e.g. on 04/18 and without re run the search?
You could do this passing the clicked field value as a token to another search to run in a different panel of the same dashboard or to another dashboard, in this way you have to re-run the same search but limited by the clicked value.
You can find how to pass a token to another panel of the same dashboard in the Dashboard Examples App (see https://splunkbase.splunk.com/app/1603/).