Can anybody write an example of how to use a rubric to avaluate an output?

The question is quite clear, if anybody can write an example of how to use a rubric to avaluate an output.
In Lesson Check Output, Isa, told that you can moderate with your own conditions, for example using a rubric, as you can use to grade an exam or practice or oral presentation. Giving the system the output, the rubric and then you get a qualifcation of the model response, according to the rubric written.

So i dont get the idea how to use this, how to introduce the rubric and how to use it…

L6: Check outputs minute 03:00

Thanks in advance