Install kwin-addons by entering the following commands in the terminal:
sudo apt update sudo apt install kwin-addons
Description:
additional desktop and window switchers for KWin
This package contains additional KWin desktop and window switchers shipped in the Plasma 5 addons module. . This package is part of the KDE Plasma addons module.
Homepage: https://projects.kde.org/projects/kde/workspace/kdeplasma-addons
Version: 4:5.12.4-0ubuntu1
Section: universe/kde