Enable Numlock and use NUM1-4 to enable features.
About lot 192 issue:
If you use unlimited items feature when you take 1st lot 192, then it will be instantly used by player but it's count will not decrease from 1 to 0 as should without cheat.
Next time you try to get 2nd lot 192 you will get the message "You already have the maximum amount of Lot 192". To fix this you can use 4th feauture of the trainer that disables items cap. With it enabled you will be able to get 2nd Lot 192.