The default number of SalesEZ application instances that start up running under Pool Management is three. We consider this the normal minimum number. The optimal number is, according to some research, the number of CPU cores plus one. So, for a quad-core computer, the optimal number is five SalesEZ instances. This number comes with some conditions though. It assumes that Pool/SalesEZ application is the only application running on that computer. So, if you have both Pool/BookEZ and Pool/SalesEZ applications running on the same computer, that number is no longer valid. In that case, we would suggest leaving the default at three instances.