Check that you have gone into Templates and then into the group selector and ensure that the chosen year or REG group is selected.
Go into Focus | School | Pastoral Structure, load up selected year then RIGHT mouse click on REG Tutor and add the teacher in here.
Go into Exams Organiser then Tools | Allocate UCI and Exam Numbers
In Attendance go into Tools | Options | Module Setup | 2. Pupils - change the date for the pupils below compulsory age to 31/08/2001.