Как определить ключи для переключения на область просмотра слева/справа в соответствии с Ubuntu 17.10 с Единицей

Забудьте о compiz-config-settings-manager, и добрался до терминала путем нажатия Ctrl+Alt+T и типа:

gsettings list-recursively org.gnome.desktop.wm.keybindings | grep --ignore-case switch

Который даст Вам список всех коммутаторных ключей единицы:

org.gnome.desktop.wm.keybindings switch-to-workspace-down ['<Control><Alt>Down']
org.gnome.desktop.wm.keybindings switch-windows ['disabled']
org.gnome.desktop.wm.keybindings switch-windows-backward ['disabled']
org.gnome.desktop.wm.keybindings switch-input-source ['<Super>space']
org.gnome.desktop.wm.keybindings switch-input-source-backward ['<Shift><Super>space']
org.gnome.desktop.wm.keybindings switch-to-workspace-1 ['<Super>Home']
org.gnome.desktop.wm.keybindings switch-to-workspace-2 ['disabled']
org.gnome.desktop.wm.keybindings switch-to-workspace-3 ['disabled']
org.gnome.desktop.wm.keybindings switch-to-workspace-4 ['disabled']
org.gnome.desktop.wm.keybindings switch-panels ['<Control><Alt>Tab']
org.gnome.desktop.wm.keybindings switch-panels-backward ['<Shift><Control><Alt>Tab']
org.gnome.desktop.wm.keybindings switch-applications-backward ['<Shift><Super>Tab', '<Shift><Alt>Tab']
org.gnome.desktop.wm.keybindings switch-to-workspace-7 ['disabled']
org.gnome.desktop.wm.keybindings switch-to-workspace-5 ['disabled']
org.gnome.desktop.wm.keybindings switch-to-workspace-8 ['disabled']
org.gnome.desktop.wm.keybindings switch-to-workspace-9 ['disabled']
org.gnome.desktop.wm.keybindings switch-to-workspace-6 ['disabled']
org.gnome.desktop.wm.keybindings switch-applications ['<Super>Tab', '<Alt>Tab']
org.gnome.desktop.wm.keybindings switch-to-workspace-10 ['disabled']
org.gnome.desktop.wm.keybindings switch-to-workspace-11 ['disabled']
org.gnome.desktop.wm.keybindings switch-to-workspace-12 ['disabled']
org.gnome.desktop.wm.keybindings switch-to-workspace-left ['<Control><Alt>Left']
org.gnome.desktop.wm.keybindings switch-to-workspace-last ['<Super>End']
org.gnome.desktop.wm.keybindings switch-group-backward ['<Shift><Super>Above_Tab', '<Shift><Alt>Above_Tab']
org.gnome.desktop.wm.keybindings switch-group ['<Super>Above_Tab', '<Alt>Above_Tab']
org.gnome.desktop.wm.keybindings switch-to-workspace-up ['<Control><Alt>Up']
org.gnome.desktop.wm.keybindings switch-to-workspace-right ['<Control><Alt>Right']

затем используйте, например:

gsettings set org.gnome.desktop.wm.keybindings switch-to-workspace-7 '<Control><Alt>KP_Home' 

установить 7 на цифровой клавиатуре для переключения на рабочую область 7.

switch-to-workspace-right и switch-to-workspace-left те, Вы конкретно ищете...