diff --git a/windowZooPB.go b/windowZooPB.go
index 72f0a4e..f74e95e 100644
--- a/windowZooPB.go
+++ b/windowZooPB.go
@@ -49,6 +49,9 @@ func addButtonForZooPB(grid *gui.Node) (*gui.Node, *gadgets.GenericWindow) {
 			t = AddMachinesPB(tbox, me.machines)
 			log.Info("table has uuid", t.GetUuid())
 		})
+		grid.NewButton("ListChildren", func() {
+			me.myGui.ListChildren(false)
+		})
 	})
 	return b, win
 }