123,
A.AS allows accommodation to be made as needed upon satisfying need, either written, or it's just plain obvious. Some folks won't ask, or want a 'head start' as they perceive it; a responsible AS Staff Member- anyone should realize that causing, or allowing a participant to injure themselves is negligence, on many levels.
What accommodation means is simply if the person must be in position prior to the Fire Command, they are; this doesn't prohibit having the rifle on the mat, having to insert a mag, sling up, &c. if it can be a. Done safely, and b. Done without causing further injury to the individual.
The second question is on the Board, I don't have the specific URL; check the IM, the info should be there. If you can't find it, PM me so I can attach that info for you.
Tom