Add, rename or remove teams. You can also just edit the Teams tab in the spreadsheet — this is the same data, easier on a phone.
Nothing lands here on its own. These are pledges you pulled off the board by typing pending in the status column of the sheet. Put one back, or remove it for good.
Anyone with the link can add a small pledge, on purpose. Remove anything that should not be there and the board drops it within 20 seconds.