The correct way is to open the panel behind the rear hatch door,
and take out the clip that hold the rear H emblem.
You might need to take out the rear black garnish (and rear wiper) too,
I will have to do this after my rear JDM H emblem (that I had ordered since February arrive), unfortunately my rear JDM H emblem (and the front too),
had not arrived, yet,
otherwise I could do a DIY for you...
but I had done some preliminary study on this,
and as I had said above, the correct way is to open the panel behind the rear hatch door and see what you need to do after that.
but of course there might be some easier way (hack way),
like prying out the emblem out and just force it until the tab is broken...
Have Fun with your modification