Yes, you can change the default "Time Picker Interval" preference so when you are scheduling lessons/events, they can be scheduled down to the minute.

To do so:

  1. Click "Settings" in the top right-hand corner and select "My Preferences" from the drop-down menu.
  2. Select the "Personal" tab.
  3. Towards the bottom of the page there is an option called "Time Picker Interval".
  4. Select another option from the drop-down menu.
  5. Click "Save".