Board Thread:General Discussion/@comment-33745381-20180104202437/@comment-28380783-20180104232133

The trick is to keep as many rooms as possible either with an anomaly or in cba mode. Therefore, when you need to summon an anomaly, you shorten the odds of it landing where you want it to go - they cannot go to sites which already have an anomaly or cba. The game, of course, tries to get its revenge by then giving you quests on cba locations. So, I play some into anomaly or use spare summoners.

Hope that helps.