Activating this trainer:
Press F1 at main menu.
Listen for 'Trainer Activated'.
Press desired hotkey. All hotkeys can be changed on the trainer.

Trainer Options:
NumPad1: Max Player Stats
NumPad2: Infinite Stamina
NumPad3: Unlimited Focus Points
NumPad4: Set Realtime Minutes Of Match To (Slows Time Down)
NumPad5: Set Realtime Minutes Of Match To (Reset)
NumPad6: Freeze Match Timer
NumPad7: Increase Goals Of Team 1 By 1
NumPad8: Increase Goals Of Team 2 By 1

Editor Options:
Minutes Of Match

Notes:
Max Player Stats: While active in 'Become A Legend' mode click on 'Player' then on 'My data' and all of your stats will be maximized.

Focus Points: While active in 'Become A Legend' mode click on 'Player' then on 'Training' and your focus points are unlimited. You may need to remove/spend a focus point before it becomes unlimited.

Realtime Minutes Of Match: Using the hotkeys you can slow down (or speed up) the overall match time.