Double click in the ‘Navigator – Project Map’ under ‘Schedules’ on ‘Wall list’
In the newly opened window click on the Scheme settings… button in the top right hand corner
In the Scheme settings open the Fields /Wall List tab
You can add fields to your schedule by selecting them in the left hand column and clicking Add.
You can remove fields from the schedule by selecting them in the right hand column clicking Remove
You can also move fields Up and Down by clicking on the arrow icons