Bulk aging between six months and 2 years.
Depends on why you are aging it.
Till it falls clear, if you waiting for it to clear.
Till the flavors meld together and alcohol heat receeds, if the taste could use some work.
Taste it when you think it is done fermenting and start to bulk age it. Take notes as to what you want to happen. Look at it and/or taste it every once in a while.