KeyedIn - Categories - Adding and Maintaining

Code	is the unique identifier for the category. You will enter an unused code when adding a record and then cannot change the code once it is saved.
Name	provides a title for the category to identify its purpose.
Active	is checked for those categories that are in use. You can uncheck the box if you want to make a category unavailable without deleting it (you will not be able to delete it if it is referenced by other records). It is also possible to set up categories in advance of them being needed and so make them inactive initially. You should set all non-current records to inactive status to prevent them being used. This removes these categories from pick lists so that users only see those that are genuinely available.
Default Category Audit	is checked if this category is to be the default when entering expenses. Only one category can be the default and so, if another was selected previously, you must confirm that you want to transfer the default status and use this record in future. This entity has an audit screen to track any changes made to the configuration of the entity.

NOTE:
If you do not use expense categories, set Login Profiles so that none appear and choose to use the default. This will cause the system default to be used if no others have been set up.