Answer

This task is very easy to accomplish. Please follow the next steps:

• go to Translations page and select the desired languages for the package
• in the same page select the radio button "Create only a multilingual package"
• now go to Media page, Bootstrapper tab and select the checkbox "Create EXE setup file" if it is disabled
• here select radio button "Display language selection dialog (for multi-language packages)"

After applying the above settings save and build your project. When you will run the EXE built by Advanced Installer you will first be prompted with the selection dialog and then continue with the MSI dialogs in the laguage selected.