In SQDR 5.10 and laler, the Schedule Dialog is identical for both snapshot and incremental groups. For details, see Scheduling a Snapshot Subscription or Group of Subscriptions.
The following functions that were specific to the Schedule Dialog for incremental groups have been changed:
The choice for running the group As Needed or On Demand has been replaced with the Automatic Snapshot check box on the Advanced Tab for Groups of Incremental Subscriptions.