The base rates prescribed in the Modern Award are the minimum wage employees can receive. If you choose, you can pay staff a higher base rate.
To step-up a higher base rate for an employee on a Award template, head to Workforce > Staff and open the profile of the relevant employee. Then enter the new rate under the 'Base Hourly Rate' field.
Award rules would then be based off this new base rate. If paying a Casual above award, enter base rate without casual loading as rules on the Award Template add in casual loading.
If you enter a Base Rate that is below award, you'll receive a warning to advise you of this.
Admins can also altogether disable the ability to enter a base rate under award via Award Conditions > Settings.