Accord :: 2007 SE - Replacement Of Armrest

The material you rest your arm on when driving is worn out and I am trying to replace it. The armrest slides a little forward with a double plastic catch in normal use but I can't figure out what to use to get the two plastic catches to release and slide off so the new one can go back on. The double plastic catch looks to be about 1" in length at about a 45 degree angle. The two pieces that are the catches look like the ends of a clothespin. So I think something under there needs to depressed so the whole armrest can be slid by what's stopping it. At least thats what I think from looking at the new one and trying to picture in my head how it works. You can't force anything that is plastic because it will just break.