This is the 7666th most frequent Russian word.
заведено
"Заведено" means "it is customary" or "it is established."
Here, 'заведено' expresses the customary or established practice within the workplace environment.
У нас на работе заведено начинать день с собрания.
At our workplace, it is customary to start the day with a meeting.
In this case, 'заведено' refers to practices or procedures that are set or established within the system.
В этой системе всё давно заведено и работает гладко.
In this system, everything has long been established and works smoothly.
'Заведено' here indicates a commonly accepted or established viewpoint or opinion within the general context.