We have a Microsoft Access database utilized to track the implementations / instruction changes related to Lockbox accounts. There is a 'date' field (IMTS Date) that when populated should trigger another 'date' field (Tech Spec Signoff Due Date) to be populated automatically. The IMTS Date field has an Input Mask of dd/mm/yy and the Tech Spec Signoff field does likewise. The Tech Spec Signoff Due Date is always 5 business days after the IMTS Date. Does the use of the Input Mask nullify the ability to utilize functions such as DateAdd? Are we approaching this issue in the right manner?