On TV! Keep the cameras rolling!
Kamala, and her Secret Service, keep a close eye on him because my feeling is he would become physically violent.
Google says she's 5'4". Trump is probably still at least 6' tall. He's got quite a few pounds on her, and he's got the reach. He could really hurt her.
I expect he'll try that looming thing he did with Hillary, which was bullshit.
They have to keep him on his side of the stage, and have Kamala facing toward him.