You can create Job Cards on the fly or schedule Job Cards in the future. By adding a future date and time to the job card "Start time" when you create it, you effectively scheduled it for a future time. This means that you can create Job Cards for future maintenance that will not be available to technicians at the moment. When you do create future Job Cards they appear in the "Scheduled" tab.
Remember that using Maintenance Schedules, you can have the system create Job Cards for you based on a schedule. See the next section for more on that.