You can also add Jira issues that already exist and edit them directly within the macro. This is especially useful to discuss all existing tasks during a meeting, not only the new ones that you agreed on in the current meeting. Use the field next to "Add existing issue(s):" and enter the JQL, for the issues you want to include in the table.
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Click on Add to add the issue to the list.
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Click Edit to edit the issues. This feature is very practical, if you want to edit multiple issues without the need to change the issue view and navigate through a huge list of issues.