mechanical ballpoint for hydraulic schematic

[FRNNDR]

Good morning to all, I need to create a distinct component with balls without the arrow (maybe of a form I decide).
I have to place them in the space where I want.

then I should create a table where the balls that have the same value are added automatically.
I attach a couple of pictures to make you understand how I work now.
I would need a tool that automatically incases my quantities.

thanks in advance