To install the SoftRobot plugin:
The plugin’s installation procedure is there: https://project.inria.fr/softrobot/install-get-started-2/download/
To install the STLIB plugin.
Since 2019 the SoftRobots plugin is more and more using an external plugin called STLIB. You can find its installation procedure at: https://github.com/SofaDefrost/STLIB
To install the SoftRobot.Inverse plugin.
The “Inverse Problem” part of the plugin is not publicly available yet. Only the team members have access to the git repository. Please contact us if you are interested in trying this feature.