This article explains the steps to create a report showing how long a custom field is in particular value for issues.
Instructions
Navigate to AIO Reports → Custom Report → New Report
Add custom fields Issue Key, Time in New Value, History New value, Time in old Value, History Old value, and History Field from the field section:
Configure the History field as mentioned below to filter for a particular field:
Run the report to get the required data:
Ensure to have proper permission to create AIO Report.
You can customize the report by adding new fields.