To convert an Issue into a Task, go to the Issue, and click on it, causing it to expand, showing the settings button:
Click on the option "Convert To Task":
The Issue has been converted into a Task, and has been assigned to the "not started" column:
The colours (red, blue, and green) associated with 'Not Started', 'In Progress', and 'Completed' will be reflected on the left side of the Issue itself:
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