Yay! The OOC is up :D

So, I have a question. For magic, how far are we allowed to branch out? In the example, it seems to be something like here's one ability, and it begins to get stronger with each tier. But are we allowed to have a general overarching power, with little sub-abilities for each tier? For example, if there was a power to control all elements (Pretty OP and broad I know, but this was the first example I could think of. I'm not necessarily considering this) could the first tier be to control fire, then the next tier be controlling water?

The magic I'm considering has to do with voice. For the first tier, could I have something to do with a persuasive voice, and the next tier could be something to do with more of a combative side like a deafening screech? Or do they all have to be somewhere along the lines of "Tier 1: ability to scream loudly. Tier 2: ability to scream loud enough to damage ear drums" etc?

I'm sorry if I'm not making any sense x_x and I realize this is kinda repetitive.