The basic time interval for work in a Scrum is called a Sprint. My team uses two-week sprints with formal meetings sprinkled throughout. The formal Scrum meetings simply replace ad-hoc hallway conversations and those demos and design sessions that we "should have had". They key is to increase transparency and avoid ad-hoc interruptions. Once we have a product backlog defined we have a Sprint Planning meeting where the Product Owner identifies the most important stories to complete in the next two...