I've just installed Rainlendar 0.19.3 and there are 3 options for where you want to keep the calendar.
This will keep the calendar in the bottom layer of the screen, not too sure what it actually does.
This should be the option to select if you would like to keep the calendar always on your desktop and nowhere else.
But it doesnt work for me. it works when you just set to Normal and once youi switch screens it disappears from the desktop.
This will always keep the calendar on the top most layer, so it will stay on desktop and will always appear on all windows.
Any ideas, please help, Thanks :)