Custom fields
While JIRA's built-in fields are quite comprehensive for basic general uses, most organizations will soon find that they have special requirements that cannot be addressed simply with the default fields available. To help you tailor JIRA to your organization's needs, JIRA lets you create and add your own fields to the system, called custom fields.
Custom field types
Every custom field belongs to a custom field type, which dictates its behavior, appearance, and functionality. So, when you add a custom field to JIRA, you really add another instance of a custom field type.
JIRA comes with over 20 custom field types that you can use straight out of the box. Many of the custom field types are identical to the built-in fields, but provide you with more control and flexibility that are not available with their built-in counterparts. The following tables breaks down and lists all the JIRA standard custom field types and their characteristics.
Simple fields
These fields are the most basic...
