After reading several guides I'm still confused on how to use the Senario data. Am I just suppose to have one Senario data for the entire game or am I suppose to make new Senario data for every new dungeon I create? I'm still very new to the maker so this is probably a silly question to ask.

Think of scenario cards the same way you would multi-disk games like Final Fantasy.

you use scenario until there is nothing left to use and then worry about adding a new set. you can make as many dungeons as you need and do whatever events you need to. dont worry about switching or multiple scenarios yet, just focus on filling one first.

System is putting places in the game, and scenario is the thing that puts everything together and makes it work. That's how I think of it.

Most of the time you'll not need more than one scenario. I've made many games and have never needed to use more than one scenario.

Like Dray said, scenario data is treated like discs. In your system data, you'll need to tell the game what sceanrio data to look for (which is whatever you named the scario data). That'll get the game going in the actually game mode and not test play. Well, if you are making a decently lengthed RPG, you aren't going to be able to fit it on one memory card. In scenario data there's a comand that says "Next Scenario." Using that command, you can type in the name of what your second card (or whatever the next card would be) and when the player hits that script, it'll ask the player to insert the next sencario card.

Just make sure that the name in "next scenario" matches the name of the next memory cards scenario data, and you'll be fine. I'm on 14 scenario cards, myself... so I've become quite familiar with this.