Here's how you can achieve this using the This can be achieved using existing functionality of Issue Matrix (IM):
Create a separate IM field for sub-tasks.
Specify which columns are relevant to sub-tasks.
Add the new IM field as a column
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in the Epic IM field.
The sub-tasks of each issue inside the epic
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are shown on that line as well.
Check out this simple an example of on how it could look looks in the attached screenshot .below:
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Please find Find the below example for reference:
Create
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respective fields in the sub-task custom field as shown in the below screenshot.
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Create respective fields in
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Epic custom field as shown in the below screenshot.
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Refer to the below gif for reference
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.
