How can I let people sign up to do - or bring - a custom item?
As a group organizer, click the “New Card” button on your group board. Give the card a title and optionally add some text or context to the card, and on the left click the “Sign up” item. You can specify the generalities of what needs to be done or brought, and click OK.
When a member clicks to “Sign up” for a slot, they will have the option to enter a description, and in this way they can communicate their custom item. In this example, we’re having a potluck and asking everyone to enter what they’re bringing.