How do I practise Vipassana and Samatha through Anapanasati?

After reading the answers to this question I understand that keeping the object of meditation same, Samatha leads to calm and tranquility of mind and Vipassana leads to insight into nature of reality. If I focus on the breath or if my object of meditation is bearth while meditation, what is the exact technique for both Samatha and Vipassana. Sorry, the answers to question does not mention the technique or what exactly to do. Also google search results are showing up magazine articles. References to suttas appreciated. Thanks.