Yeah, Samsung locked down any changes to the delivery (address, hold, signature). I spoke with my local hub and they said I could leave a signed note on my door authorizing leaving the phone on my porch if no one is home and the driver will leave it at the first attempt, as opposed to him leaving a door tag that I can sign to authorize leaving on the second attempt. My neighbors are like Ray, Art, and Rumsfield in The 'Burbs, so I can rest pretty easy knowing that the full neighborhood watch is in effect.
Of course, this is not ideal, or even an option, for many people. Anyone taking off of work?