Getting Started with Tableau 2018.x

Creating a Calculated Field

To create a new Calculated Field, go through the following steps:

1. Click on the small arrow next to Dimensions in the Data pane, highlighted in the following screenshot: 

It's also possible to right-click on a field and go to Create to start a new Calculated Field based on this field. You can edit a Calculated Field when you right-click on it.

2. When you create a new Calculated Field, a new window opens where you have to write a formula. The formula can be based on other fields, calculated or not, and use functions.
3. On the right, when you click on the arrow, you can open the list of functions.
4. When you write a formula, ...