Go into the bs09/cfg folder inside the game files and make a new text file called “autoexec.cfg”, in it insert the following text:
bs_nocard_weaponslot 8
bind KP_END "changelevel cd_map_001"
bind KP_DOWNARROW "changelevel cd_map_002"
bind KP_PGDN "changelevel cd_map_003
bind KP_INS "changelevel bs_map_p001"
bind KP_5 "disconnect"
bind KP_HOME "bs_card_show"
bind KP_PGUP "thirdperson"
bind KP_UPARROW "firstperson"
thanks to arcade punks for this.