For this you must have at least 17 Skill Points (you can see how many Skill Points you have by looking in the top-right hand corner of the Pro Clubs menu). You will start with 10 Skill points, I got another 9 from playing 5 Drop-In Games.
Simply load up the Pro Clubs menu, under My Pro, click on the right-most box being your character (large box with your level, name, overall and etc). Choose any Play Style, click Attributes then go to the Pace tab and go to the bottom-most skill, Cheetah Archetype. Simply allocate your skill points to this.
I created this video to help:
Hope this helps.