To find your disposition codes and begin the customization process, start by clicking on the User menu and select the 'Settings' option from the dropdown menu.
On the Settings page, select the 'Disposition Codes' tab.
Once on the Disposition Code edit page, click on the settings menu to see your options.
Select 'On - Disposition Codes Required' from the drop down and your updates will automatically save. No user in your account will be able to proceed with rejecting an applicant or candidate without first selecting a reason why.