I've read the part in the Forum about the new Characters. I've even got one started. But I can't switch to items for my Character in boss fights. I keep getting a green check mark and a swirling arrow like it's thinking. Meanwhile it states that I've selected units for my army, but that I can switch at any time for units for my character.
Unfortunately there is NO button to do this. I'm guessing that the little swirling arrow is where the button would be. (see attached photo)

Mach.