Hi Steffen,
I understand that you are looking to set up a toolbox in MATLAB that can be started with the command "usd."
To create a custom toolbox that can be shared and installed, you can package your MATLAB code, data, apps, examples, and documentation into a single, installable file. Once packaged, you, or others, can easily install this toolbox using the generated installation file. For a complete guide on how to create and share custom MATLAB toolboxes, you can refer to the following documentation link:-
Additionally, if you are looking to understand how to add a new toolbox to MATLAB, you may find the following discussion helpful. It provides insights on how to incorporate new toolboxes into your MATLAB environment:
I hope it helps,
Thanks and regards,
Akash.