Welcome to the RetroFE forums
Due to recent events, I can't help you any further, sorry.You need to read the wiki further as it is explained on there, good luck.
You need to either use a theme that supports multi-tier menus, or you need to copy the layout.txt file to the layouts/<layout name>/collections/<collection name>/layout/ directory, like the manual says:http://www.retrofe.nl/wiki/doku.php?id=layouts