When you initially set up a monthly or auto-renew, capped IO both the IO total and your remaining amounts are equal. In case you add an additional IO, your remaining budget will increase. However, your total budget will remain the same as it indicates the total amount of the monthly recurring capped IO.
i.e. when you initially set up an auto-renew or monthly, capped IO of £500,000 your budget total will be £500,000, whilst your remaining amount will start decreasing based on your campaign activity as seen in figure 1 below:
ただし、終了日前に上限あり予算(=Capped) に £60,000 を追加した場合、利用可能予算は増加しますが、 IO の月次反復予算額は変更されずに残ります。図 2 は、 £60,000 を追加した後の月次反復 IO の変化を示します。