I went to Systems > preference > Compizconfig settings manager and clicked general options.

I had several boxes that I can choose from... General, display settings, Focus & Raise Behavior, Key bindings and finally Desktop size. I've chosen the Desktop Size and on Horizontal virtual size was on 1. To activate your workspace you need to type in how many numbers you would want to have for your workspace. I've chosen 4. After you've exit the Compizconfig settings manager you should notice on the right bottom corner of your screen the amount of workspaces that you've chosen from the Compizconfig settings manager.