Welcome to the community.
Can you share more details like, screenshots of screens, configuration you made.
When and where do you want a table and show the summary and description information?
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Where would you like to see a table in the parent issue, or a you referring to the ootb linked Sub-taks information section in the parent issue?
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The linked sub-task view in the parent isn't configurable.
No columns can be added there.
Does this answer your question?
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