You may need to
edit an employee's pay rate due to a change to their employment conditions, employment agreement or due to a legislative change i.e.
The Minimum Wage has increased.
By changing the information on their Personal Details it will apply the new rate to the next pay period in full.
If the change is to take effect from a particular date, i.e. 01 April, you may need to apply the rate to only part of the pay period. You can split the hours in the timesheet of an Open pay.
Refer to
Reports > HR > Staff-Pay rates or use
People > Tools > Upload Pay Rates.