No, you shouldn't be putting them in Shipped Extensions. You should just do what Rich said and install them Using the Extension manager from the download folder.

@millypatty said: Thanks I'll give it at try. This is the type of bedding I'm hoping to achieve. I've drawn the bed but I have imported the bedding and it doesn't fit well to the bed frame. Which is why I want to recreate it myself. Will the method you have outlined help me to achieve this look? Does this example look like it was created in Clothworks? I am not sure if this was created with ClothWorks. This puffiness effect looks nice and so far, with ClothWorks, it was only applied to creating pillows. With regards to bedsheets, I currently have no understanding of how to replicate this effect. To support this kind of puffiness effect, I believe there needs to be a soft body simulation support. Right now, it's just flat sheets.