When you configure an Assignment Rule with a Future Start Date and do not select the “Assign on the Start Date” checkbox, the rule will begin running on the specified start date.
From that point forward, it will automatically assign training to users who newly meet the rule’s criteria (for example, new users added to the system or users whose organizational structure has been updated).
Important: In this scenario, the rule does not work retroactively. It will not assign training to users who already met the criteria before the start date.
Only if you enable the “Assign on the Start Date” option will all users who already match the rule’s criteria be assigned the content on the selected start date.