Delete single episodes?

I just signed up for YouTube TV, and I am enjoying it. The one area I can’t figure out is how to delete a single episode from the DVR once I have watched it. I am DVRing the Olympics and I would like to delete the parts I have viewed. I know I have unlimited DVR space, but I would like to make my “Library” more user friendly. Thanks!

Harperreads about YouTube TV, v2.00.10