Boards are secondary Desks to organize your todos into projects. Creating a Tag expands into a Board, where you can sort through work and jump back into a given topic with minimal context switching costs.
To create a board, you have to:
Tag a card, referring it to a project.
Click on the tag to go to its board and see all cards related to this project. You can also find it on the left navigation bar.
Click on Create Tag Board
Check the Board’s inbox for incoming tagged cards
Organize your todos on your new secondary Desk.
You can organize your boards with columns to better manage your projects.