3DS Max - V Ray - VrayCryptomatte - Render Element

As you know, we can perform many postproduction operations inside the V-Ray Frame Buffer window, but what if we like to apply these adjustments on certain objects inside the Frame Buffer, and not on all the image.
VrayCryptomatter render elements will help us mask certain objects directly inside the VFB by picking with the mouse. Also, when we add the Vraycryptomatte in the Render Elements tab, we can decide what criteria we want to use for picking, we have options like: by individual objects, by material name, by layer, by node's user property.