You can see if someone else is already attached to the card by clicking the "Members" button. If no one has added themselves to the task, you can search for your own name and add yourself to the card to claim it.

When a card has files attached, you will see them listed in the card. To attach something new, select the "Attachment" button and upload your file.

You can move a card to the next phase of production by dragging it between lists using its title.

When you have completed a task and moved it forward it the pipeline, you need to remove yourself from the card, so someone else can claim the task. You click on your avatar in the members list and click "Remove from card."

Click the "Add Card" button on a list to add a card. You are then able to edit the card description and attach files, so you are able to provide miscellaneous spot art. You will not add cards to any other section.