Making a video fullscreen couldn't be simpler.
Step 1: Log in to your Learner Portal.
Step 2: Select the ‘View lessons’ tab on your current course. You will be taken to the video page for that course.
Step 3: Simply click on the square shaped icon on the Top right- hand corner of the viewing pane.
To minimise the video back, simply press the 'esc' button on your keyboard.