My own custom page in MUI installer

Could somebody please tell me how to insert a custom page in a MUI installer 🙂

I have searched the Forum, Examples (installoptions.nsi)
Manual and Archive and I still can't find a clue

Could somebody please help me , Thanks 🙂

The Modern UI Readme contains a whole section with information about custom pages.

Examples\Modern UI\InstallOptions.nsi also shows you how to use a custom InstallOptions page.

You could also try nsis editing programs. They normaly have nice built in gui for creating installoptions.