Hi bolsoncerrado !
As there is only two hinges, you can place them where you want, no problem, it's really easy like that !
For my box i placed them as i wanted by eye and yes, it's just where the corners finish ^^
For the door panel, i drilled 4 holes, 2 on door, 2 on corners and i glued 4 tiny neodym magnets (watch for poles). No difficulties too here :)