If you're using the Simple_Grid_with_Details_and_Video example, the part of the code I've been understanding as displaying that second screen is in the HomeScene.brs. anytime an item is selected on the home grid, the details screen will be set to true:
' Row item selected handler
Function OnRowItemSelected()
' On select any item on home scene, show Details node and hide Grid
m.gridScreen.visible = "false"
m.detailsScreen.content = m.gridScreen.focusedContent
m.detailsScreen.setFocus(true)
m.detailsScreen.visible = "true"
End Function
