How to Kick a Player from within Tabletop

If you can't get the player to leave the campaign, I'd recommend this work-around (since I don't think there's a kick feature within a running campaign itself): Go to your campaign details page and click on the "Copy/Extend Campaign" feature. Duplicate the campaign and invite everyone to that one sans the annoying player. Once the player eventually leaves the campaign, you can kick them and go back to the original campaign or continue playing with the duplicated one. Whatever's easier.