It sounds like you're using the Edit Mode preference in the Disbursement & JIB Options screen on the Processing tab. This will require you to click the Edit button on the toolbar before being able to make any changes to the information being viewed. The Edit button on the toolbar appears as a hand holding a pencil on a piece of paper, and is just to the right of the New button. Click this button, and the fields on the screen being viewed will activate allowing you to make your changes.
In Accounting Manager Version 6, Disbursement and JIB Manager Version 8 and Disbursement and JIB Manager Integrated Edition Version 3, you can change this option under Edit > Preferences > Miscellaneous Preferences.
Return to Edit Mode