How to make your own proxy for each sandboxie?

Question

Virtualization

It is necessary for each sandbox to assign its own proxy, in fact for 1 process running in different sandboxes. proxifier can assign a proxy for a process by name, but the processes are named the same, but it cannot by PID.
There is a video guide , but nothing is clear there because of the inscription on the floor of the screen, it seems to have turned out, but when it was and there is a classic sandbox, I downloaded it, I did not find such settings