Create A Drill Down Using Dynachange Navigator

1. RMB click the field you want to create the drill down in (From). Dynachange > Dynachange Navigator > and select 'Make field a drill source'

2. RMB click the field within the window that should be populated with the data from the source, Dynachange > Dynachange navigator > and select 'Make field a drill target'

You should now be able to drill into the field to open up the related window and it will populate the value from the source field.