You don't need to setup anything as Seller already setup everything and after he recieved payment, he send you Panel link along with login id and password. After login to Panel, Stealer have three section-
Add build:
(1) Choose config name
(a) Screenshot
(b) Browsering History
(c) Telegram
(d) Steam
(e) Self removal
Crypt this build and buy install. Give crypted file to install seller, as soon he spread your crypted build you recieve log on your panel. I you face any problem or don't understand anything, contact raccoon seller. he will answer you.