Hello,
CCA is calculated based on the class you have selected, the software is CRA compliant meaning based on the class you selected the software will calculate the appropriate CCA Rates. If however you believe the software is not calculating as you would expect I would first check with CRA tax tip line in order to obtain the appropriate rates and class, then if required over ride the CCA rates on the S8Class which will flow over to the S8. CRA tax tip line is 1-800-267-6999.