don't know for sure, but as a general reference that are a couple ways they are put on. look near the base of the shift knob and if could have a trim ring that goes all the way around it. these are held on with pressure and enough pressure pushing down will pop them off. then there should be a clip ring or set screw under it holding the knob in place.
that's the most common design on newer vehicles. some others (like the 00-04 focus) are more simple and just have a set screw on the side of front of the shifter.
an issue you may into is when reinstalling it. if i remember correctly the o/d button is on the shifter and could require taking more of the console apart to be able to plug it back in for reinstall.
as before this is general reference and not 100% sure how these are set up.
2010 Volvo C70
2011 Harley FLHTK
Midwest Crew #22