Thanks for the input. After reading your messages, and doing lots more web reading, here's what I think I'm going to do. In the garage, next to the controller, I'm going to add an Intermatic, spring wound, 30 minute timer switch. (Your comment about a timer made sense.) I'll run a wire from the 24 VAC input terminal on the controller (yellow wire) to my switch, and then run a return wire from the switch to the MV/PMP lug on the controller. Here's a rough picture (probably way too big).
So, I'll connect a hose to the hose bib at the well. Open the faucet. Go to the garage, and turn my switch for 10 - 30 minutes, which will send 24 VAC to the PSR, which will activate the pump for a defined period of time. I can water the vegetable garden and roses. Pump will either shut off due to time expiring, or me going back to garage and setting the timer to off.
See any issues here? Thanks, mike