OK i'm using Maya 8.5 but in previous versions of Maya when I right click on and object and select a component i.e vertex, it used to automatically enable component selection mask so i could drag a selection and select vertex only on that object.This is not the case with me in 8.5 , the selection mask remains on all objects so when i drag a selection the vertex of the original object get selected but i also select other object at the same time so now I have to press F8 to initiate the selection mask or hit spacebar and change the mask in the hotbox.
Finally to the question ...can anyone tell me how to chnge the right click menu so that when the vertex or face selections are chosen the componet mask changes automatically like in previous versions of Maya?