Quote: "My Game Have 19 levels.I want to know when end of each level can save automatically one by one separate slot.That mean wen player complete my game it have 19 saved game can be load any time also the load save and load screen must have display all of 19 saved game."
Short answer... no. The use of "quicksave" will use slot 1 only as that is how it is structured in the source. When you press ESC and click save, the player can choose the slot only.
In order to have it auto-save in each slot, you would need to mod the source to have it write to each slot, in addition to adding more save slots that you would require.
There's no problem that can't be solved without applying a little scripting.