This is the 12547th most frequent Russian word.
комендантского
"Of commandant" or "curfew-related."
The word 'комендантского' refers to the curfew in this context, describing the noun 'часа' as pertaining to the governance or enforcement by an official known as 'комендант' (commandant).
Из-за введения комендантского часа все жители города должны оставаться дома после 10 вечера.
Due to the introduction of a curfew, all city residents must stay home after 10 PM.
Here, 'комендантского' is used to describe the role related to 'ответственного' (responsible person), referring to an administrative or management duty.
Имея комендантского ответственного за здание, студенты чувствуют себя более защищёнными.
With a commandant responsible for the building, students feel more secure.
In this instance, 'комендантского' modifies 'распоряжения' (directive), indicating an action or rule imposed by a commandant.