This is a PRO feature (not available in the free version).

Below
Select the parent category under which this category should be created.

Number
Enter a number to determine the sorting order of the categories. By default, these are three-digit numbers, and a category only contains salary types that begin with this number (this is only a convention). For example, category number 100 contains salary types starting from 1000.

Name
Enter the name of the category. This can be multilingual, see Translation field.