lubuntu-extra-sessions software package provides extra session for differents default settings of Lubuntu, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install lubuntu-extra-sessions
lubuntu-extra-sessions is installed in your system.
Make ensure the lubuntu-extra-sessions package were installed using the commands given below,
$ sudo dpkg-query -l | grep lubuntu-extra-sessions *
You will get with lubuntu-extra-sessions package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | X Window System software |
| Package | lubuntu-extra-sessions |
| Version | 0.39 |
| Description | extra session for differents default settings of Lubuntu |
| Sub Section | x11 |