I have a calendar that tracks time off for employees. They select a start date/time and end date/time and also have the option of choosing all day. Once enter it goes to a request table. In the request table approvers can either approve or reject the requests. In the request workflow I need it to update the date/time fields if All Day is true. I know who to check the condition, my problem is with updating the date/time. I need to set the start date/time to the day they originally selected and the time to 12:00AM. I also need to set the end date/time to the end date they selected and the time to 11:59PM. I cannot figure out how to do this in the workflow. When I select Update Item in the workflow and then select the field to update the only option I have is to use the calendar. How do I do something so simple? Am I missing something?