When we set up our collective agreements, we saw how you could add employee-specific premiums. If the current employee is assigned to a union that includes employee-specific premiums, you can add them on the Employee entry’s Premiums tab.

The effective and expiry date define the period the premium rates apply to.
The regular rate must be within the range defined for the union. The time and a half and overtime are using the overtime multiplier defined for the premium.
You will have the option to add these premiums to timesheets for this employee.