To have several working break callout, you can use the following template and change the "0" value to 1 or 2, 3 etc to make another working break callout. The limit of working callout/break for each character might be the same as other hash, 9 according to Maegawa.
COMMON/MENUS/CHARACTER/BREAK_Miles/***RANDOM***/0
For example :
COMMON/MENUS/CHARACTER/BREAK_Miles/***RANDOM***/0
COMMON/MENUS/CHARACTER/BREAK_Miles/***RANDOM***/1
COMMON/MENUS/CHARACTER/BREAK_Miles/***RANDOM***/2
Each of these should have different hash.
Teancum explained how they work here :
http://marvelmods.com/forum/index.php/topic,1359.0.html