Reply to help with DDJ SX and tractor

Hello, I'm a complete beginner when it comes to DJ'ing. I have used Traktor Pro for a while now with my mouse and keyboard, and just got my DDJ SX. I absolutely dislike Serato DJ, therefore I want to get the Viper Mapping.
I have however no clue how to load it into Traktor. Also, is it right I have to put my DDJ SX into a certain mode?

I looked and I kind of got it to work, however are the roll, slicer and sampler mode not working. I can't activate them. I feel like i did something wrong when trying to run the DDJ SX in the "pioneer utility modus". Also am I not sure how I am supposed to do that. Do I unplug the USB cable --> put ddj sx in standby --> hold play + shift --> start the ddj sx while holding it --> let go of play + shift --> connect usb cable --> start traktor and load midi file --> put ddj sx in standby mode to safe it --> turn it on again.... thats how i understood it but im not really sure if im doing it right

Help would be greatly appreciated as I am really frustrated right now :/