When would one be required to bounce (stop and restart) the Concurrent Manager?
Using the printer definition process within Applications, it is imperative that the Internal Manager (ICM) is bounced in order to pick up the changes. If only a concurrent program definition is modified, running a verify on the Internal Manager will pick up the changes without the need for bouncing the manager.
When you modify the Printer Driver you have to restart the Manager which runs the request which is attached to that Printer Driver, however,if you do not know which manager then you have to restart the Internal manager because the printer driver can be used by multiple managers and multiple requests. If only a concurrent program definition is modified, running a verify on the Internal Manager will pick up the changes without the need for bouncing the manager.