"generating sets" refers to a group of objects or elements that work together to create or produce something. It is like a team where each member contributes their skills to achieve a common goal. Full definition
Each world that you visit will have its own randomly generated set of dungeons, towns, caves and forests for you to explore and fight your way through. (chaosoftgames.com)
The Evidence - Based approach generates a set of resources needed to implement a set of educational principles based on the best academic research on student success. (fundmischools.org)
If you're not the sort to spend a lot of time reading the previous paragraph, there is an option for automatically generated settings to be used. (newgamenetwork.com)