You can track both using notes!
If you are an Enterprise user, set up a note type called "Calibration" on the web interface. Now when you create a note, select the type calibration, enter the activity and a due date. This will send a notification to both the tool admins and the employee using the tools. Reports can be generated on the web interface.
When the calibration is completed, you can enter a completed date and who completed the activity.