Adding Statistics and Machine Learning Toolbox to existing MATLAB

The new "Statistic and ML toolbox" has just been added to my license. I have MATLAB already installed and I'd like to add the toolbox. Based on the answer https://www.mathworks.com/matlabcentral/answers/101885-how-do-i-install-additional-toolboxes-into-an-existing-installation-of-matlab, I tried to run the installer from ISO image. The installer says "Cannot install in the specified folder". Sure. I have MATLAB installed. I need to add a toolbox to the existing installation.

How can I install an additional "Statistic and ML" toolbox into an existing installation of MATLAB on the _offline_ machine?

[Ridwan Alam]

https://www.mathworks.com/matlabcentral/answers/101885-how-do-i-install-additional-toolboxes-into-an-existing-installation-of-matlab?s_tid=answers_rc1-1_p1_Topic