You can assign different currencies to different staff under ‘Currency’ found on the Employee Pay Details page.
Payslips can only show one currency at a time, which is the default currency symbol selected in the Configuration Page. The exchange rate is for IRAS purposes only. So if you pay the users in a different currency, the system will be able to convert it to SGD and fill up the IRAS forms correctly.
Additionally, ensure that the CPF/SDL option isn’t ticked to disable CPF deduction from the staff on the employee information page. (refer to the 'related links' to find out where)
*Note: The currency tagged to the staff will not convert their pay into their foreign currency in the payslips.
How to edit staff’s information (particulars/ pay details)?