Work flow through in Quality notification

Dear Expert,

We are trying to trigger to mail in the outlook in box during QM notification process

following are the scenarios

1.Creator on creation need to get an email

2.and coordinator need to have an email as when creator assign him

3.task person need to have an email upon assign by coordinator

4.when task person closing the task coordinator should get another email

5.when coordinator complete the task email need to trigger to all three

Can you please suggest what are the work flow need to activate

Thanks

Abu