Spaces can be placed inside folders. To create initial folder, place one space over another, to do that tap on the space drag it over another space, folder appearing underneath will be seen, once ready release space. Same action can be repeated within the folder creating folder within the folder and so on. To add another spaces to newly created folder simply drag those on top of that folder.
In order to activate folder edit mode tap on the folder to be edited and hold, you will see "X" appearing on top right corner of each folder. If you wish to delete that folder tap "X", you will be asked to confirm, by taping "Yes" folder will be removed permanently. Another way to remove space is by taping on it once and then taping recycle icon.If you wish to rename folder, once edit mode is activated, tap on the title of the folder and rename it.