>>37768937Basically the game uses a BP (battle points) system to determine the amount of actions you can take in one turn. You get one BP at the beginning of each turn automatically. Instead of using this, you can use the Default command which reduces damage and doesn't use any BP. This way, you can save up several points of BP to use all at once while reducing damage when Defaulting. You can save up to 3 (or 4, with one support ability) at a time.
By choosing Brave, you can use up several BP at once to take multiple actions in one turn. You can even go in the negative, like go from 0 (the usual amount) to -3, but this means your character will be unable to take any other action until his/her BP has been replenished to 0 again. Later on you'll get access to several classes who are able to give allies more BP and reduce those of enemies. It may sound a bit complicated, but you'll figure it out in no time once you start playing.