When you publish a schedule, you commit the schedule data to the work records in the database.
When you publish a scenario, it becomes the main schedule record, and commits the changes that you made in the Gantt view to the work records in the database. A snapshot of the Gantt view is created, and can be viewed later by using the Manage Snaphots and Scenarios window.
You can publish a schedule from the Select Action menu, or by using the Publish toolbar button.
You cannot publish a schedule that is in draft status.