There are a few possible scenarios or reasons;

• After you have closed a job and invoiced it, it will no longer be displayed on the Agenda module.   But you can access the invoice anytime on in the Invoiced or archive files.
• If you have not assigned a specific appointment time, it will not be posted on the agenda, but will be on the list of appointments.  
  To display it in the agenda, open the job and provide an appointment time.
• If you have not provided sufficient time for the job, it will not be seen on the agenda either, but will be listed in the appointments.  To post it to the agenda, open the job and provide a duration time. (minimum 15 minutes)

An easier way to view all your appointments it to click on the View icon in the agenda of Automotive Appointment Software .  Each time you click this icon, you will cycle through three various views.  If you see an appointment listed but not on the agenda, you will notice either there is no set time for the appointment and/or no duration time for the job.  To post a job to the agenda, simply click and drag (Drag & Drop) the appointment to the work bay and time you want.