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If you would like to pool questions together, add a question as you would to an assignment, and then click on it in the assignment.
(classic view, older code base)
(new view)
The steps are very similar between code environments, even if they look a little different. At the top is the older code base, at the bottom is the newer code base.
(classic) Scrolling to the bottom offers a 'question pooling' section; click the green + on the right to expand and add questions to this pool.
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