I'm assuming you're talking about this?
I think dual mode toggles can only be on the same row as other dual mode toggles. There are three toggles that can be dual mode: WiFi, Bluetooth, and Cellular. If you tap the overflow button on the right in the list view for the toggles you can select whether or not it should be dual mode.
Ahh I see what you mean, I had duel mode stup onWifi, Bluetooth but not data. Once I selected on all three they then became 3 tiles in a row. I really would like 4 tiles, including airplane mode, but there is no duel specific setting for that. I suppose it is a tile I wouldn't use very often. Could just live with the 3 tiles!