Name: the section here, "Scenario: ..." in main menu.
Location: "Go to ..." in destination menu, "Location: ..." in main menu.
Level: your lead character must be within this range or the scenario will not be available. The figures are inclusive.
Prerequisites: any other requirements, e.g. scenarios you have to take first.
Reward: the maximum benefit you can get from a scenario. In most cases it's possible to come out with less. The quoted values for 'exp' and 'gold' are restricted to explicit end-of-scenario rewards.
Items: any otherwise unobtainable items found. Note that this isn't "complete" in that it basically only includes important items or things you get at the "scenario clear". There may well be other things lying around.