Hi there, was hoping to get some help and clarification on my maternity leave and pay. I work in a secondary schools and in September started at a new school, the HR department have confirmed my 3 years service from the previous school will be carried over. She has written down for me the set up for maternity pay which is: 10 weeks at 90% (offset SMP), 20 weeks at 50% (and SMP) and then 9 weeks SMP. The parts I am confused about is the parts she has put in brackets, surely I won't get 50% plus SMP??? And what does offset mean? 
The HR lady is notoriously hard to get hold of so if anyone here could help that would be much appreciated, thank you