You can spend a point of Legend to add your Legend rating in auto-successes to a roll you've made but I haven't yet described the results of, yes. The overall campaign (cycle, Scion calls it) will include multiple stories; I'll let you know when all "per story" things reset. For now, do you wish to spend a Legend point to make tailing the satyr 5 successes rather than 2 successes?

(Alternatively, you could spend a Willpower point for one success, leaving you with 3 successes. There's no limit on the number of times per story you can do that--beyond your Willpower rating.)