Private PVP Character Selection

I was wondering if anyone knows of a way to select characters in a private pvp match against bots.

I am asking because I think this would make a good ‘practice’ or ‘training’ mode when someone wants to practice going against a certain team build.

I know myself personally could use more practice against a team build consisting of Ambra and Orendi. So far the combo of those 2 is the bane of my gameplay