Alesis Andromeda A6

Is it possible to get keyboard hold simply without having to keep the
sustain pedal pressed down ? Its Ok to use a pedal, but then I would
like to just press it down to activate sustain hold, then release it
again without any change and then when I do the second press down I
send a key up and sustain holds end ? 
Other ways ? I like to hav envelope mode equal to norm1 or norm2.