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Go to your Jira project.
In your project sidebar, select
Under Configure Hierarchy for Custom Field, select the desired custom field.
Build your field hierarchy:
Current Hierarchy field to display its configuration.
Default path: default field value for new issues.
Expand collapse the entire hierarchy.
Create a new node under the specific node.
Edit current node.
Delete current node.
Set current node as the default path.
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Searching for issues with specific value
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