Can i compete my bot programming code vs friends?

Hi! I found no way to compete in bot programming games (those with a league and one on one) versus selected users. Is there a link i am missing? I want to compete vs the bot of a friend. Is there no option to do so?
Thanks in advance!

If you mean in the local arena, you may delete the boss and select your friend in its place:


Wow, thank you very much! I searched a long time for that. This essential feature is definitely well hidden. :+1: