what is the Installer default path in the start menu?<>
This question already has an answer here:
Have you looked at setting the DefaultGroupName directive in the [Setup] section ?
The value of this directive is used for the default Start Menu folder name on the Select Start Menu Folder page of the wizard. If this directive is blank or isn't specified, it will use "(Default)" for the name.
To answer your question in the comment ... do you want the users to be able to change the installation path ? If not, add DisableDirPage=yes line to the [Setup] section.