staff pattern.

what is the rule of forming the staff pattern in secondary school? who are to be selected for upper primary level and who are to be selected for secondary level? are the physical education and work education teachers mandatory for upper primary level? If a teacher joins in a p.g. post(sub: English) in a Junior High school and latter on the school is upgraded to secondary level, and the teacher has got new approval for the secondary level, and the person has 19 years seniority in that institution, in such case, is that teacher is to be shown in upper primary level or secondary level?