It doesn't works that way. You might be able to skip gears at times fooling the ecu. Usually it doesn't up shift if speed is very low.
For example on idle you cannot shift beyond 1 and 2.
Similarly at very low speeds you cannot take it to 3 or 4 or 5.
Even if you do. Its like pressing the clutch and struggling it to slowly pickup. In case you don't know AGS has a clutch and you can damage clutch plates if you start playing with it.