Shiloh B. passed his CGC test back in late 2004, at the end of his Intermediate/Advanced level obedience training at Petsmart - it also helps that I try to keep up with it everyday - meaning when we are out in the yard just any day, I will work on his sit then I'll walk off or around a bush - I make him stay until I call.
As for the supervised separation - is there someone there who could help you with this? They hold Sebastian while you walk around the corner - start out with short times then increase as he learns that you will come back.
Shiloh B. is also a therapy dog thru Delta Society, we are a Pet Partner team - we passed the intitial eval back in the spring of 2005 and have passed our re-evaluations twice since then - that is a requirement: re-evaluation every two years.
I am at work right now - if you have any other questions, I will try to remember to check later this evening.
By the way, I believe Beagles are completely underused and under-represented as therapy dogs - Shiloh B. loves it - I hope my other Beagle, Shasta B. will pass her eval this fall.
Gotta go.........