hello can change this code to two buffer not one buffer ?

[Ahmed Ahmed Elnagdy]

hello 

i want change this code from one buffer with together ( green , red ) , to two buffer color ( buffer ( green ) , buffer ( red ) 

until if i want use it with expert i can call every buffer alone 

thank you

and i want ask about 
how i can to separate the sale quantity and the purchase quantity separately ?
mean , if i want volume buy only ( how many ) in this frame or other frame , and volume sell only ( how many ) in this frame or other frame ?

thank you