How do I set up this timer to do a simple dusk - on to dawn - off operation and to automatically adjust the on/off times based on the unit's 'self-adjusting technology'?

Jim, thank you for your question. We would love to have the opportunity to work with you directly and help walk you through the setup steps for this product, so you can enjoy our products to their full potential. At your earliest convenience, please give us a call at 1-800-654-8483.