In the schedule settings, you have an option to change the maximum number of items you can study in one day.
Be careful, though – at first it's exciting and you can't stop, but then you can get overwhelmed with reviews. So once you've learned a few dozen, you might want to try lowering the limit again. Or not. See what works for you.
Like @むじな said, increasing the number of new terms per day isn't always a smart choice. Trust me, your daily reviews will pile up way higher than you think. It's best to keep your new terms per day relatively low. I keep my vocab around 5 per day
It won't be a big deal for hiragana and katakana, but you will have to think carefully about this when you move on.
