Multiple Hero Classes?

So I have a question that’s been plaguing me … though I think I already know the answer (and it’s not ideal).

I am a Switch player. Can I set different Hero Classes for different teams? For example, can I set my PvP defense team to be led by a Bard, while setting another team up with an Orbweaver so that I can level that up?

Or am I stuck using the same Hero Class for ALL game purposes at any given point in time?

As far as I understand, it’s the latter, unfortunately :slightly_frowning_face:.