First: Yes indeed that is a blooper! I don't know how we let that one through as I have just checked the draft texts in in there it is correct. It has obviously happened in the transfer to 'format' and Clarence and I have both missed it in the proof reads
Half rate for Line wheeling, full rate otherwise.
On your other question... two squadrons MAX wide. Look under the definitions for line formation, it explains it there. Additional squadrons form up behind the first two if you have chsoen to make it two wide..
Wait till CH sees our missed correction