By default, the Automatic rule will set money aside for you every Monday or Tuesday.
However, on top of Automatic we have other rules like round-ups, Pay days, etc. If you have these on as well, you will notice that the amount Plum is setting aside is higher.
If it becomes a bit too much you can adjust which rules you have going! Just tap 'Brain' and scroll to 'Rules' and toggle off the ones you don't need anymore.🙂
Alternatively, you can also adjust your Automatic's 'mood'. You can find more details about moods here.