Marking the mock

Hello I was just wondering if you could help, I am marking my mocks and I just wanted to make sure I am doing it right. Could you confirm how I should be marking section A & B. Every question in section A is 2 marks, how are they distributed is it 2 for right answer and 0 for wrong? or can 1 be awarded for working? Section B - 10 marks per question with 5 parts to the question again are workings awarded a mark and then the right answer a mark or is it 2 per question if its right and 0 for wrong?