Hi, I try to understand, how I can create a tree of main deck - sub deck - super deck etc.
I´ve looked into the manual (Anki Manual). There stands, that the symbol “::” should be used to create different levels of decks.
I don´t have any clue, where I should add the “::” within my Anki desktop resp. my Anki App (Iphone).
Currently I use approx. 2000 cards, but all “parallel” with some main decks.
Hope you can help me… Best regards from Berlin
Just create a new deck and rename it to something like super_deck::some_name to nest it under super_deck (from the gears button next to the deck name). Then you can move some cards from the super/parent deck to the new deck from the card browser.
Thanks, this has worked.
No chance to find it out for me by just reading the manual… 
For completeness, you can also drag and drop decks onto each other.