This is the 5757th most frequent Polish word.
wyznaczone
Designated.
The word 'wyznaczonego' (designated) is used here as an adjective describing the place, indicating that it has been chosen or set for a purpose.
Musimy dotrzeć do wyznaczonego miejsca na czas.
We must arrive at the designated place on time.
The word 'wyznaczonych' (assigned) is used as an adjective, describing the duties as being allocated or determined for the employees.
Pracownicy trzymają się swoich wyznaczonych obowiązków.
Employees adhere to their assigned duties.
The word 'wyznaczonym' (designated) functions here as a descriptive term for the time frame, indicating that it was established or set beforehand.