Here is how to add a label to a card in trello
- First click on the "Boards" option in the left sidebar
- Then click on the board that contains the card where you want to add a label in the Workspace section
- Next click on the card where you want to add a label
- Then click on the "Add" button in the card details
- In the dropdown menu, click on the "Labels" option
- Click the checkbox next to the label you want to apply to the card
- Finally click on the "X" button to close the labels popup






