To see a weekly snapshot of a trainers schedule with their available time, follow these steps:
Quick Functions >> Sched Matrix or Functions >> Scheduler >> Sched Matrix
From the Quick Menu in the middle of the screen, choose "Trainer Schedule".
Select the trainer you want to view in the drop down and the appropriate week.
You can scroll through using the option at the top left to see future weeks. Any time slot that shows "open" means that the trainer is available.
To learn how to set trainer availability, click here.