As of August 1, 2018, there is a new user interface that allows you to create custom variables using a formula builder.
Creating Custom Variables makes it possible to:
Build a Custom Report listing only the variables that you are most interested in analyzing
Map the Custom Variable
Run a Ranking Variables report using Custom Variables
Editing Custom Variables may be necessary if:
You want to make the Variable available in All Workspaces
You want to change other properties of the Variables
You want the variables to appear in a preferred order
Click on the link below to download a detailed QuickStart document on how to create and edit your custom and favorite variables.