Hi I followed the guide of Jackal website https://www.clearpathrobotics.com/assets/guides/noetic/jackal/simulation.html using "sudo apt-get install ros-noetic-jackal-simulator" ".......noetic-jackal-desktop" " .......noetic-jackal-navigation" respectively but it seems that only package of simulator and navigation successfully installed. As for the desktop, the command line runs" Unable to locate package ros-noetic-jackal-desktop" ,so does anyone know what's the problem? and even more, how what is the alternative approach to simulate jackal in gazebo? Im new in ROS

It'll be appreciated if someone has useful advice.