In Microsoft Excel, the dialog box that allows you to change a field name in a PivotTable is called the “Field Settings” dialog box. This dialog box can be accessed by right-clicking on a field in the PivotTable and selecting “Field Settings” from the context menu. In the Field Settings dialog box, you can change the field name by editing the “Name” field. Additionally, you can also modify other settings related to the field, such as the summary function, number format, and sorting options.
– Microsoft Support: Change the display of data in a PivotTable