Once all Training Sessions are set up, the Trainer is ready to conduct the live training. Typically this will take place somewhere in the physical world. Once the training is complete, the trainer would want to indicate which users have actually attended the training. This is done through the Users tab (1) in the course's details.
Click on the Units progress (2) option for each user will bring up a pop up with all course units along with training sessions when the instructor can mark the unit session as complete (3).