The Full Time Equivalency (FTE) of an employee can be set from the Employee Profile. FTE can be used to reduce the salary of an employee; for example if they only work 4 out of the normal 5 days they might have an FTE of 0.8 and receive a reduced salary as a consequence.
The employee FTE can be set on the Employee Profile of the employee.
Canadian Payroll > Employee Profile > Employee Profile.
Update the FTE (see Full Time Equivalency (FTE) value).