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.
Click on Add to add the issue to the list.
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.