The timeframe that you select for your milestone plan is up to you. Adjust it as often as you feel necessary to reflect your updated situation. If you are working on paper, allow enough space between each milestone so that if additional ones are thought of, they can be added in. Those using a computer might want to try Microsoft Project™. It's a common software package that has an excellent milestone-planning tool.

After the selected milestones have been laid out along a timeline, identify the linkages between different events and how they relate to each other. You can do this using lines, arrows, or symbols; show what events need to be accomplished in order for another to be possible, etc. You should also include the major assumptions behind each event, as long as they are realistic, for example, price or quality assumptions, and the likelihood of events taking place on schedule.