Excel Pivot Table - add calculated fields

Our pivot table is through the existing raw data collection to get, if we want to see the field is not in the table, and require complex calculations to come, then how to do it? we need添加计算字段

The original data only employee information as well as a monthly salary, and now want to add the salary increase salary situation.
We started operation ~ ↓↓↓↓↓ test data download, using the original data [3]

Prepare data

1. Select all the data ctrl + A
2. [Insert] - [PivotTable]
3. This time we will generate pivot table in a new worksheet [in].
   

Add calculated fields

[PivotTable analysis] - [field, and set the project] - [insert] field
so that we can edit out a new field