Honestly, I don't know if it is a plug and chug spit out the number. My guess is it is not because the rec from the CoC is in part subjective. Now if they do it like a promotion board in the ADAF, it basically goes like this:
ADAF officers, typically O5, but for all I know it could be O3s. The board will meet for a limited amount of time. The raters sit at a table of however many they decide. Let's say 3. At every table there will be a stack of candidates. Each rater will individually score the candidate. If there is a large disparacy between the raters, the packet is placed aside to be re-evaluated. Not sure if the original raters talk it out or if it gets re-evakuated by a new group.
From there the cadet will get a score. They than take every cadets total and draw a line for the number of the cadets they are going to send, Above the number they get to attend, below they don't.
Now as I stated this was how it was explained to me a few years back, so don't make me swear on it, and don't flame me if I was given wrong info.
Now before you ask the next question, going to Max 1 does not mean the cadet was the highest score. The Max assignments come down after. This is more about college schedules. For example, our DS's det could not send any to Max 1 because their academic year went to about 3 days prior to report. DS went to Max 6 because his school didn't start back up until Aug 31st. Cadets at VT could not go later than 4 because their school started in early Aug.
As for the rated board it is a repeat of this process, but a little different because the cadets place in order their AFSCs. They place that into the equation. For example cadet Smith may have the highest score, but they took the ABM scholarship. That means they move onto number 2 for the pilot slot.
Again they will have specific numbers for each rated slot.
No flaming, that is what my friend told me because their DS went OCS, and is at UNT (CSO). He was told that even though he asked for pilot, between AFA and AFROTC, there were very few UPT slots left for OCS. The majority went to ADAF enlisted applying for OCS, thus why he got CSO.