Pin Discussion with Settings Icon
To pin a discussion, click the Settings icon next to the discussion you want to move.
Pin Discussion by Dragging
You can also pin a discussion by dragging it to the Pinned Discussions area. To drag a discussion, hover over the discussion you want to move.
Manually Order Discussions
Within Pinned Discussions, you can manually reorder discussions. Drag and drop the discussions in the order that you prefer.
Move Discussions with Settings Icon
You can move a discussion within the Pinned Discussion area. Click the Settings icon  next to the discussion you want to move and then click the Move To... option .
Unpin Discussions with Settings Icon
You can unpin a discussion by selecting the discussion's Settings icon and clicking the Unpin link. The discussion will automatically move back to Discussions. If the discussion became locked after it was pinned, the discussion will move to Closed for Comments after unpinning.