The latest start date that is acceptable for this project when it is synchronized with other projects.
By setting this field, you can move the project's starting date earlier or later than it is currently scheduled, which is especially useful for Critical Chain projects that are scheduled backward from an end date. For example, you may have a concrete end date for the project in mind, but after scheduling the project in isolation (without regard to other projects) find that you can start it earlier than it needs to start to be completed by the desired end date. Specifying an earlier start date gives Sciforma more flexibility when synchronizing multiple projects.