Estimated and Actual cost fields
When fields are set to "Not Synchronized", the values are stored only in BigPicture.
Estimated cost and Actual cost can each be mapped to a Jira issue field - this means you can associate cost with individual tasks and further automatically aggregate (roll up) the values in your boxes.
Cost values need to be manually entered for tasks.
Use
Cost columns
To edit the values, edit the column view (Overview/ Gantt/ Scope/ Board modules)
Limitations
Estimated cost and Actual cost are NOT automatically calculated based on the cost rate of the assigned resource.