I need help to modify the number of places monsters

I need help to modify the number of places monsters

Means I want her to appear in the place I am Who I specify, including
Walkman and boss monsters big problem I want her to appear in the place who I am I want

I have looked long but I never find answer I hope that I find here

If you just look then sure you'll never find the answer. Why not try to experiment? Instead of just looking, maybe you'll get an answer (: