[opensuse-factory] howto set taskbar icon stacking

I used to be able to group/stack icons of open apps on the taskbar, but cannot find the place to select this option. Is it still possible, or not implemented yet? ie: three instances of firefox would be one icon on the taskbar which would popup three icons to allow individual selection. tks, -- Patrick Shanahan Plainfield, Indiana, USA HOG # US1244711 http://wahoo.no-ip.org Photo Album: http://wahoo.no-ip.org/gallery2 Registered Linux User #207535 @ http://counter.li.org -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org For additional commands, e-mail: opensuse-factory+help@opensuse.org