Schedule of charges are the charges your chapter planned, or scheduled, for the term. Your chapter's officers and/or advisors create your schedule of charges prior to each term. You may have charges billed in full on one cycle, or they may be broken out into multiple cycles throughout the term. You can see this article to learn more about billing cycles.
If you want to view your scheduled charges, you can do that under your Account Overview in MyOmegaFi.