The system would release a set amount of quests, which was more than the amount of requests from players who needed help, at a specific time every day. Any mercenary group that wished to attain fame would depend on completing these system-issued quests repeatedly every single day. If the completion count and percentage of success were high, the mercenary group's rank would become higher. Naturally, players would look for these better ranked mercenary groups to aid them in their requests.
However, system-issued quests, especially those repeatable ones, were very boring. No matter how interesting a quest was, no one would find joy in doing it for ten times, hundred times, or thousand times. The perseverance required to do so would be staggering.