You can change Custom Team Slots 1 and 2.

To change the name of CUSTOM TEAM 1 and CUSTOM TEAM 2. 

FOLDER (modloader/FOOTBALLSTREET/CLEO/CLEO_TEXT/FOOTBALL.fxt 

OPEN With NOTEPAD or Sanny Builder3.

then Rename text (RENAME TEAM 1 and RENAME TEAM 2) Argentina vs Spain.

FOR YOUR TEAM 1: Player 1 to Player 5.

(player1.dff player1.txd)
(player2.dff player2.txd)
(player3.dff player3.txd)
(player4.dff player4.txd)
(player5.dff player5.txd)

The file is placed in the (CSTEAM1) folder.

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FOR TEAM ENEMY 2: Enemy 1 to Player 6.

(Enemy1.dff Enemy1.txd)
(Enemy2.dff Enemy2.txd)
(Enemy3.dff Enemy3.txd)
(Enemy4.dff Enemy4.txd)
(Enemy5.dff Enemy5.txd)
(Enemy6.dff Enemy6.txd)
The file is placed in the (CSTEAM2) folder.

TUTORIAL IN VIDEO In the 7th minute: https://www.youtube.com/watch?v=naMqHD9-yZk