At its simplest, a drill down is a hyperlink that links back into Dynamics GP. When the user clicks the hyperlink, the focus changes to Microsoft Dynamics GP 2013, and the linked window opens in GP with the appropriate data. In the real world, a dashboard might display cash balances for each bank account, or checkbook in GP terms. The operating checkbook would have a hyperlink attached on the dashboard. Clicking on the link would cause the checkbook register inquiry window to open in Dynamics GP and display information from the operating checkbook.
There are limited training resources available around drill downs. Drill Down Builder gets only a few pages in the SmartList Builder User Guide. Other books on the market that cover SmartList Builder skip Drill Down Builder altogether. When I pushed Microsoft for a list of pre-built drill downs, it couldn't supply one. Also, Microsoft inconsistently uses the terms drill down and drillback interchangeably...