In order to protect copyright, the course is restricted to 6 viewing per tutorial which is more than enough to complete the training.
The exception to this rule is the 'Exam Simulator' which you can use as many times as you wish. Simply email jo@bisio.co.uk and she will reset it for you.
However, if you use up yours turns because of a technical problem such as a faulty internet connection then email jo@bisio.co.uk giving your reason and she will reset your turns.