Organizations may want to extend a Project deadline for a certain group of submitters while letting the initial deadline expire as planned for others.
Follow these steps to switch your Project form to a Live and Hidden status. This will prevent any unwanted applicants from finding your call on your public-facing Submittable page.
Navigate to the Project for which you'd like to extend the deadline.
Under the General Settings tab, change the Expires On date to the new deadline date and toggle the Hidden setting on. This will make your Project hidden from public view.
Send the Direct Link to your newly hidden Project to your selected group.