How to use several workspaces?

Question

I was many instructions say to go Settings - Appearence. However there is not Apperence any,any where.

Answer 1

Open the System Settings -> Appearance -> Behavior and check Enable workspaces.

If this method does not work open a terminal and execute the following commands :

gsettings set org.compiz.profiles.unity.plugins.core hsize 2  
gsettings set org.compiz.profiles.unity.plugins.core vsize 2  

Now workspaces should be enabled - if you want to disable them again execute :

gsettings set org.compiz.profiles.unity.plugins.core hsize 1  
gsettings set org.compiz.profiles.unity.plugins.core vsize 1

Answer 2

Option 1: Maybe the setting is called differently in your language?

You can open the System Settings window in English by running the following command either from a Terminal (Ctrl+Alt+T) or the Unity HUD (Alt+F2):

LANG=C unity-control-center

You should get a window like the one below.

As you can see, the Appearance settings belong to the icon with the purple monitor. Clicking it will display you a window that should look about like the following one.

Clicking on the Behaviour tab will then finally take you to the options of your interest. Here you can tick Enable workspaces.

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Option 2: The icon (and maybe more) is entirely missing

This can happen e.g. after accidentally uninstalling some important packages, usually gnome-* things. If you use the Unity Desktop Environment (standard Ubuntu's default), you should be able to fix it with one of the following commands. Try them out one after the other in a Terminal (Ctrl+Alt+T) and check which one solves it.

sudo apt-get install --reinstall unity-control-center 
sudo apt-get install --reinstall unity-control-center-signon gnome-control-center-unity
sudo apt-get install ubuntu-desktop
sudo apt-get install --reinstall ubuntu-desktop

_{Adapted from: AskUbuntu.com: System Settings icons missing in 14.04}

After one of those commands fixed it, you should be able to see and use the icons as described above.