Backdrop – one stop brighter than key light. Typically f11 vs f8.
Need 4 lights and a lot of space. Typically the background lights would be approx 2m from backdrop, and subject needs to be further still.
Could use reflector instead of fill light, or could use one light, maybe a beauty dish or a ring light. Could add a hair light too.
Could use foam boards, V Flats or flags to help prevent spill from background lights.