App Fields
App Fields are customized fields designed to provide additional insights into your Jira issues. Adding new App Fields follows the same process as adding new Jira fields. To do so, navigate to Column Configuration, click the plus button to open the side panel, and then scroll down to locate 'Others - App fields'.
If you would like to request for more App Fields, please raise a support ticket.
Refer this page to know more about list of available app fields in Cloud and Data Center: List of App Fields in Cloud and Data Center