Rice: I have never actually heard of a "waiting list" for Res soldiers to get on a tour, unless this is something that some units are doing on their own. If that's the case, I guess it's up to whoever is managing the list.
The normal Army procedure is for the Army or Area G3 staff to post the vacant positions on CFTPO, the Army on-line tasking system, where they are visible the moment they are input to the program. (Your Unit Training Office has access to CFTPO...) The Brigade G3 staff then manage the allocation and filling of the positions by the units. In our Brigade we then run the Departure Assistance Group (DAG) that does all the major admin checks and preps for the deploying troops. We don't leave this to units, at least not in our Brigade. Some do, but we prefer the quality control.
What I can tell you is that at Brigade level (one level above your unit) we fill positions as quickly as we can, provided that the units give us the right people with the right qualifications. We have a pretty good track record on this in our Brigade, and my estimate would be that most Res soldiers who want to go overseas will go. It really depends on how many missions are being sourced to your Brigade to fill, and how many Reserve soldiers/of what MOC are needed on the mission. Both of these factors have increased exponentially in the last couple of years. We dispatched a Res platoon to Op ATHENA this summer at very short notice, with no difficulty filling the slots.
The biggest problems we run into are:
-units providing incorrect or incomplete administrative info so that we cannot process a person in time;
-soldiers not taking care of their own personal admin responsibilities in time to deploy (will, home care, debts, etc);
-soldiers lacking the correct qualifications and;
-soldiers who are just too physically unfit to complete the pre-deployment training. Reserve soldiers who want to go overseas, especially in the Combat Arms on Ops like ATHENA, MUST BE FIT!!! And, what's more, they need to work on it on their own. Anyway-isn't it up to all of us to be fit, Army, civvy or whatever?
Other than that, it works pretty well. Last summer we tested our system under pressure by pumping over 200 troops through a DAG for Op PEREGRINE, the fire emergency in BC. This was done in record time, including fire training and dispatching troops by air to BC. The system can work. Cheers.