Install xfswitch-plugin by entering the following commands in the terminal:
sudo apt update sudo apt install xfswitch-plugin
Description:
fast user switching plugin for the Xfce panel
Xfswitch allows you to leave the current session opened and open a new session with another user. It runs in the Xfce panel.
Homepage: http://goodies.xfce.org/projects/panel-plugins/xfswitch-plugin
Version: 0.0.1-5ubuntu5
Section: universe/x11