You can include the dynamic drilldown functionality in dashboards by defining destinations to link to when a user clicks on fields in your dashboard. The value captured by the mouse-click can be sent to the defined destination. This destination can be another dashboard, form, view (within your Splunk installation), or an external web page.
The key to implementing drilldowns within a Splunk dashboard is to use the XML tags:
<drilldown> tag, you can optionally specify a
target= attribute if you wish to direct the drilldown destination (which defaults to
target="_self" and the link will open in the current window).
<drilldown> tags, you can add one or more ...