Are you looking for requirements gathering outlines for making dashboards? If so, I just have an overall recommendation of focusing in on what customers are trying to visualize/share rather than the 'how's'. Too often, we see customers that come to the community trying to achieve a specific requirement of a visualization rather than focusing on what information a goal should try to achieve/share.
The other recommendation I would share is to not get too bogged down in requirements but instead, take the overall information objective for the viz and then start creating. Iterate often and frequently.
my 2 cents at least.