Question related to Oracle PA Billing Rate Schedules

Since the implementation of our PA system we have set up different burden schedules, with different profit margins (%), in order to generate a draft revenue. But now our CFO is questioning if we could do this a different way. He is asking, if there is another way to establish different profit margins at a project level, so that when we generate the draft revenue, the raw cost will be burdened with the established profit. In other words, is there another way, besides using the burden schedule to generate profit margins in a project?