---
title: "Introduction"
canonical: "https://support.appfire.com/space/PSJ/15487352/Introduction"
format: markdown
---
With **Power Custom Fields** you can expand your Jira capabilities using our many types of flexible configurable custom fields.

Some examples of use cases for Power Custom Fields:

- Use the [PCF Interval ](https://appfire.atlassian.net/wiki/spaces/PSJ/pages/15487808)field to display the work spent on a ticket split between phases.
- Use the [PCF Regular Expression ](https://appfire.atlassian.net/wiki/spaces/PSJ/pages/15481820)field to validate the field on data entered.
- Use the [PCF SIL Script ](https://appfire.atlassian.net/wiki/spaces/PSJ/pages/15487363)to display any custom value, calculated by the field using a [SIL](https://appfire.atlassian.net/wiki/spaces/PSJ/pages/15489652) script.

These are just a few use cases. However there are countless usage possibilities when combining our “select-like” field types with one of the default display types/templates:

![Template Selector](media://a5e80fee-f450-4461-b19b-8d5cdfc24410)

![image-20240206-122303.png](media://2d3e253a-d274-443c-988b-2f5dcc6dc773)