Quote Originally Posted by Cid
I assumed that the "3" stands for three slots available, so I changed them all to 1.
It's not recruitment slots as such, it's the maximum number that can exist in the pool at a given time. That is, if you don't recruit any catapults, the pool would fill up to 3, and then you would be able to recruit 3 of them at once if you wish. If you change it to 1, this means that you could recruit only one when pool is at max, but it doesn't affect how often that would happen. Lower the decimal number to decrease the frequency of how often the catapults become available. For example, if you lower it to 0.1, a new catapult will be available to recruit only every 10 turns.