In reply to Jim Houghton:
Hi Jim,
Having worked at a climbing centre for a while, we started running sessions (bottom rope parties, boulder inductions, teaching beginners how to bottom rope and belay etc) with in house training, shadowing, and assessment.
I would suggest having a technical advisor will help - giving a 'syllabus' for what staff need to be taught (including rescue techniques), equipment they must have on them when running a session (and how to use it!). I'd be surprised if after a day, all the staff would be competent to run a safe session. I would suggest a day of training, plus several sessions shadowing, some consolidation/practice sessions (a couple of hours going over rescue techniques, group control), an assessment, and then running a couple of sessions being observed would be more appropriate.
Great that you'll have a wall at work though!
J