Have you completed the workshop from beginning to end? If so, you might remember workshop 6:
https://zorro-project.com/manual/en/tutorial_kelly.htm

Here, two different assets and two algorithms are used. Now, you can select any asset and algo combination in your script and isolate those related trades using current_assets, because it is in reference to the current asset and algo combination.

If you did not complete the workshop, I highly recommend it.