Complete Operation: This button completes the single milestone. The milestone is derived from the estimating standard (task) under cost links.
Complete Milestone: This button completes all Cost Links associated with the task in combination. The milestones are derived from the estimating standard (task) under cost links.
Complete Category: This button completes all milestones (cost centers) that have the same operation category. This is derived from the cost centers listed under: System Setup> Organization> Cost Centers, where the ‘Group by Category for Scheduling’ option is be to selected.