From the Jobs page, select the job you want to review. If the payout is correct, you can tap Approve and no further action is needed. If you need to customize or want to see more detail, tap Review.
From there, you can tap each line item to mark it as commissionable or not.
If the line item is highlighted in blue, it's commissionable. If it's grey, it's marked as not commissionable.
From there, you can optionally additionally customize the payouts. See Edit Payout Amount for more information.