SplitPane will automatically populate the form based on whatever relation is declared between the two component's DataSources. If that's somehow wrong, you can wire the recordClick event on the TileGrid to the Edit Selected action on the form.
Note, if you want to design visually, you should definitely be using Reify.com rather than Visual Builder in your SDK. It adds several majors features (such as workflows and Users & Groups) and is being updated constantly with new capabilities.
Comment