Start and End dates can be added to a Process via the Edit Process Summary Dropdown, on the Update Process page. This only affects an applicants ability to start an application and is NOT a deadline to submit a form.
If you have entered a Start Date in the Process Editor for a specific process, the ability for an applicant to start a request will begin at approximately 12:00.00 A.M. of the timezone your site is set to. The process must also be active in order for applicants to apply.
If you have entered an End Date in the Process Manager, the ability for an applicant to start a request will end at approximately 11:59.59 P.M. of the timezone your site is set to. Meaning that the Apply button will disappear and if an applicant has not started a request by that time, they will not be allowed to do so.
If you have any questions/concerns about your site's timezone setting, please contact Foundant Support at email@example.com.