no it all happens with the press of the button/key, in point form it will do the following:
- reset the slider you are moving
- turn on the effect when the button is pressed
- move the slider 1% or the distance every 20 milliseconds while the button is pressed
- turn off the effect when the button is released
what is an effect you like to use? i don't remember what comes standard anymore... i'll show you an example you can use on your keyboard, then you can modify it anyway you like by changing the effect name & slider number
EDIT------------------
beat me to it.... and if you change the script language in midi masher you would definately get more layman users like me LOL