To set the Auto W/Off WIP option in SIB Posting Allocations screen to be ticked by default for SIB Slip and General postings follow the steps below.
Select Posting Maintenance form the main menu.
Click on the Billing tab.
Under the heading Option find and highlight Auto Write-off WIP when only part billed.
Click Update.
Use the drop down to change the Details to YES then click Save.
This default will be set for SIB in Slips and General Postings.