Reply to really hate asking this sort of question but so far the manual is failing me

i use serato, bought an x1 earlier and since it came with the 2.5 license i installed it to give it a go. what my problem is, is when i go to set up the timecode by clicking on the decks letter the drop down menu doesnt have the option for "scratch playback" it just gives me the deck types. the manual backs this up and google isnt being fruitful