Users can organize their projects or uploaded files into projects. Simply click on "Add folder" button
on the left-hand panel of the screen and you will be able to create a new folder
After you create a new folder, you will be able to add the projects there. Hover the cursor over the project you need to move to a folder and you will see a small circle icon on the upper-left corner of the project preview- tick the circle to select this project and then simply drag and drop this project onto the folder.
Note: folders in "My projects" tab are rather tags -by clicking on a specific folder, the system will show you all the projects added to this folder.