Set Distribution Agent Schedule
Specify the schedule for the Distribution Agent to run for this subscription. Select Continuously to guarantee that data modifications will be propagated immediately between the Publisher and the Subscriber.
Selecting Using the following schedule runs the Distribution Agent hourly (default), or daily, weekly, or monthly. However, choosing a frequency other than Continuously increases the latency between the Subscriber and the Publisher.
Select On demand only to run the Distribution Agent only when specifically requested. This option also enables a Subscriber to use Microsoft Windows Synchronization Manager.