Learn more about person reservation in FSM: https://docs.coresystems.net/workforce-management/time-slots.html
Reservation and absence time slots are used to accurately reflect the availability of a given employee in FSM. They represent scenarios when an employee cannot be assigned to an activity because of a training, sick leave or any circumstance defined as a reservation/absence type. Once the reservation has been assigned in the Planning and Dispatching Board, the employee’s schedule will be blocked out for as long as it’s indicated by the task’s length.
Available reservation types can be found under the Time slot types option. Their colors can be customized.