The First/Last Comment Date Custom Field does exactly what it says on the tin - it calculates the issue's first or last comment date.
To Create a First/Last Comment Date Custom Field
- Navigate to Jira Admin > Add-ons > Enhancer Plugin Menu > Custom Field Configuration and go to the Date tab.
- Click on the button.
- Fill in the dialog box:
- Pick JEP - First Comment Date or JEP - Last Comment Date in the custom field drop-down menu.
- Create a Name for the custom field.
- And then click on the Add Custom Field button. That's it.
This custom field can be used to sort or search in issue navigator.