First animation

Hi everybody, first time here, so I’ve got a question, I’ve started to rig and skin Gus(you all remember him?) but in the tut they only use 1 bone in his arm, so I added an extra bone, but how can you add vertex groups, because i can’t see the bones in the links and materials window although I’ve selected both the armature and the mesh. any help plz.

never mind, found a way, cleared parent and then reparented, now it works