This guide provides step-by-step instructions on how to reschedule a lab appointment to a future date and request that the patient be scheduled for the appointment. It includes details on accessing patient information, selecting the appropriate date for the lab appointment, creating a task message, and assigning it to the relevant recipient. The guide also highlights the option to send the message on a future date if desired. Overall, this guide is helpful for healthcare professionals who need to manage and coordinate lab appointments efficiently.