I currently have English and Russian keyboard layouts which I use frequently. Occasionally I also need Greek keyboard, which I'd like to install. But getting used to dealing with three layouts is a pain in the neck.
Also I'm not going to use Greek very often, so I don't want it to pop up when I switch layout with Shift+Alt. Is there a way to leave this layout and be able to use it by clicking on language bar on the taskbar and selecting it manually, but not through Shift+Alt?