Before deleting a session, make sure any scheduled applicants are first moved to a new timeslot in a different session!
To delete a session from Scheduling, you will first want to click the Schedule tab at the top and select the "Schedule" drop down.
When the calendar view appears, find the date that holds the session needing to be removed. This can be found in the monthly calendar in the top-left corner.
The session blocks will show in the weekly view when the date is selected. If a session is scheduled for later in the day, you can scroll down within the hours shown.
Click on the block for the session requiring deletion. Then, click the trash icon to remove it.