Within the Block drawer, there is also a "Mass Actions" block. \
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To use this block, you need to click the button "Enable bulk editing."\
Once clicked, we can see the checkboxes reappear for each activity, as well as a list of additional items and actions that we can use to edit our course.
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If we need to duplicate or move "Required Materials" activity, under the "Readings & Resources" area, we can check these boxes.
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Use the two dropdown menus to either, "Move to section," or "Duplicate to section"\
Select the section you want to move or duplicate to in the dropdown (we chose Topic 4, the newly created Subsection from earlier)
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Click on the arrow ➡️ to finish the action.