They seem to have individual ones, rather than stage based ones - from the original post:
Once you take a card you “put your face on it” (assign it to yourself). Dev etiquette is that you should never have your face on more than 2 cards at a time: 1 major project and 1 minor.
Once you take a card you “put your face on it” (assign it to yourself). Dev etiquette is that you should never have your face on more than 2 cards at a time: 1 major project and 1 minor.