How to configure board for an existing list

You can use existing SharePoint lists to create a new board: open the “Boards” list on the top of any kanban board and click “Create new board.”

Create new board

Select the “Configure board for existing list(s)” option.

Configure board for existing list

Specify the board name and click “Open lists picker.”

Open lists picker

Choose the list for your board and click "Save."

Choose a list

Then navigate between all the tabs and adjust the board as described in the "List setup", "Board setup", "Card setup," and "Advanced setup" sections.

New board