I don't think this is the forum to ask about magnum.
You can check this article at:
https://www.magnum4d.my/Magnum4d/med...de-english.pdf
Quite a long winding instruction but the gist is that you ask for permutations if you wants to buy all the possible numbers from a certain number (for example: 6266, if you permutate, you will get 6266, 6626, 6662, 2666).
You can purchase it in any of Magnum counter.