Switching layouts with keys and a couple of other questions

Hi all! I've switched to TDE not long ago, it works fine, though I experience some problems. First of all, layout switching. I set setxkbmap -option -option grp:ctrl_shift_toggle in the Xkb options tab, but this feature doesn't seem to work, CTRL+Shift does nothing with layouts. Second, is there some option for TDE menu to show submenus in one column, like MS Windows did for the Start menu? My Settings submenu fills the entire screen and I don't know what to do. Third, is it possible to close windows by double-clicking the icon in the upper left corner? I don't find such an option. Best wishes, J. Drahun.