Field help (PCCGRP) 

Use this field to assign this cost type to a specific cost type group.

Cost type groups, for example, Sales, Development, Labor, Products on demand, Products in stock, provide a means of grouping together similar cost types. This might be for statistical purposes or for identification purposes.

Cost type groups enable consolidation of the expenses on the project budget structure in the Financial overviews (in the Cost types table (grid)).