So I have read all over the place that it is possible to convert an existing SharePoint 2010 folder to a Document set. There is apparently even a tool to make sure that this goes smoothly (SharePoint 2010 Folder To Document Set Conversion Fix). The problem is that I cannot find anything explaining how to actually make this conversion happen. I have read somewhere that you need to add the document set content type to the library but I don't know what to do from there.
Can anyone give me a quick walk-through on how to convert an existing SharePoint folder into a document set?