Sometimes I want to add some cards to an additional set/folder. Right now, the only way to do is waiting for it to show up on the learning queue, and add it to a set. But, I want to be able to do this by just picking the card in the set, and add the secondary sets.

I want this because I am studying the language via different platforms, and I am organizing my sets by the place I came across the particular word. But, sometimes, I need to study them topic by topic, not resource by resource.