The NHPPA has received hundreds of questions from concerned citizens who are genuinely confused about how the law-making power of parliament actually works.
This link is to the parliamentary website’s explanation of the process. There are many variations from the broad themes outlined here.
Much like a sports team coach who uses the rules to advantage, political parties and offices can massage rules to make them fit specific policy goals. Tax planning would be one area of using the rules to our advantage most of us are familiar with.
With that caution in mind, enjoy this lesson in parliamentary law-making 101.