In Tableau, the only one way to display a visualization is by adding fields in shelves. The different shelves are Rows, Columns, Marks, Filters, and Pages. When you use a field on a shelf, it becomes a pill.
However, there are two very different ways of adding a field to a shelf: the automatic and the manual way. The automatic way is useful when you want to go fast or if you have no idea how to visualize your data. The manual way is needed when you know exactly what you want to build.
Let's start with the automatic way.
