>>535473534
open it in Outfit Studio
select Slider tab, then Load Preset
>inb4 I don't have a preset
make one, then go over first two steps
once done, make a new slider, also found in the Slider column
select its edit mode on the right
make adjustments, preferably with the vertex move tool, because the increase volume tool is kinda sketchy unless you know what you're doing
save changes
rebuild in BodySlide
done