Go to Tools > General Maintenance > EPF. Click on Add button to add new EPF Code.

Set EPF code as 7% & 13% and description as New 7%.

Employee Rate Type: Select rate type – Percentage
Employee Rate: 7
Employee Rate Type: Select rate type – Percentage
Employer Rate (<=5000): 13
Employer Rate (>5000): 12
Next go to Payroll > Employee > Employee Maintenance. Click on Batch Edit.

Search for EPF and select employee name and choose for new rate 7% & 13% – New 7%. Click Update Selected Employees, and click Save to finish.

Alternative you may edit manually in Employee Maintenance.