On page 47 of the Tome of Adventure, it states that "When a creature or NPC action is recharging, no other creatures can use that action". Does this refer to groups of creatures (e.g. the example on p. 56 of the WFRP Rulebook where six beastmen are split into two groups of 4 and 2), such that each group can use the Action, or does it refer to ALL creatures irrespective of groups.
Does the same rule apply with Active Defences, such that only a fraction of the creatures are able to defend themselves, no matter how skilled they may be?
Finally, not so much a rules question as a comment - strikes me that while it's illogical that Actions can be accessed by only 1 creature, this would at least be balanced if the Action recovered more quickly with more creatures around. But this doesn't happen either. So all in all, it seems like groups of creatures are hamstrung by somewhat illogical metagame rules which, whilst doubtlessly making a GM's life less complicated, significantly risk the suspension of disbelief.