To view your published Itemised Payslips, you can either view it for all employees or individual employees:
Click Export > Payslips at the "Month Total" section for the PDF file for or click on the Print Payslip button under each employee's name in order to see the detailed breakdown.
To see the breakdown in the electronic version of the payslip, simply go to the Payslips page, access the payslip, and click on the > sign to expand and see the detailed breakdown.