Capturing a town in one week is a built-in quest, 'Die in week without town' (it's just a true/false selection; you can't change the name or description). If you don't need this quest, set everywhere to false for player 0, both in 'primary' and 'secondary'. But I'll warn you right away: it's especially difficult to understand quests. Without scripts, I don't even know how to do it.
Цикл "Закадычные враги": "Особенное гостеприимство, "Супероружие", "Меж молотом и наковальней"
"Падение Шантири"
Кампания для "Кодекса Войны"
"Выбор Сагиттеля"