Adjusting the due date on a current project
While on the Project Overview page, click the green button in the top right that says Edit Project.
This will bring up the project edit page. You can edit the due date from the Basic Information (step 1).
At the bottom of the left column, click the calendar icon and choose the new date. To adjust the time, click the clock icon underneath the calendar. The time zone dropdown should be set to your current time zone.
Click the Save and return to Project button in the bottom left to save your changes.
A pop-up box will appear asking if you'd like an automated notification email sent on your behalf for the change. Select "Notify" or Don't Notify."
You will be returned to the Project Overview page and can see the reflected bid due date change there.