This can be done by using the EXE bootstrapper. First, you can add the
languages you want by using the Languages tab of the
"Translations" page. You should also make sure that you are building a
multi-language package. After that, in the Configuration tab of the Build page you can check
the Create EXE setup file option and select Display language
selection dialog (for multi-language packages).
When the installation is launched through the EXE bootstrapper, it should
show a language selection dialog. The available languages are the ones selected in the
"Translations" page.