Formatting not holding?

I wanted to set just the top level of my start menu to multi-column, but it kept causing all the subfolders to go multi-column as well. So I went back to just having a single column.

But then, when I installed new software, the start menu folder went multi-column.

Is there something I forgot to disable or turn off?

Regards,
Chuck Billow

This video shows the new way to customize menus and submenus at any level.

PS. Make toolbar backup before playing with this