S-Voice can be activated only with voice command?! no old style of long press ??1

if i want to activate the S-Voice be long press home button like the note 4... can i do that ?! and how?
i can't find anything else other then Voice Command which i really hate.... i does not work properly and when i use earphones it does not work at all... just have wake up with voice command. would like to have the old option with long press... is it possible?