ADvendio offers two versions of this tool:

•  4.3.5 Net Calculator within the Media Configuration  (7.2.2.1.3 Setup the Net Calculator & Budget)

• Stand-alone 4.5 Net Calculator
  

• You can configure and change the Media Campaign fields for the Stand-alone tool using the Field Set you find under the object Media Campaign:

• Click on Edit to open the Field Set:

• Drag and drop fields into the fields set. 

• Save