I have tried going from the warehouse menu to the quest board but it never works . Can some one tell. Me how to use it where to look for a good guide.
You can use them only if you have used gems 3 times to autocomplete quests. Then you can use one of those cards to reset those autocomplete counter, so you would be able to again complete quests with gems another 3 times.
Imo you don't need those cards at all.