Training is an interactive combination of lectures, instructions, individual and group tasks, presentations, discussions, case studies and role-plays. Training courses usually last two or three days, depending on the training subject and content. Some courses consist of a few stages. Between stages, participants work on specific tasks related to the training topic and their everyday work. Role-plays and presentations in some training courses (sales, presentation, management) are video taped in order to give a chance to participants to watch their own performance and learn from it.