Hello everyone,
New to the forums and to customizing addons for OS'. I was reading the topic on how to create addons, but I have some applications that require serial numbers. How do I create an addon in such a way, that the serial number is automatically inserted and the application is silently installed. And does the tutorial work for all applications?

Generally, you need to export some registry keys which contain registration information and maybe other settings in a .reg file. Then add to your batch file a command like this:

after installation command.