Refresh Frequency for ADManager Plus

Refresh Frequency for ADManager Plus

I know it is possible to manually refresh the objects in a Domain using the Refresh button but I would like to know how frequently ADManager Refreshes on its own, without manual intervention? 

Also, is there a way to change how often the objects get refreshed? If not, can this be added to the product?
                New to ADManager Plus?

                  New to ADSelfService Plus?