Task/Card labels is the label given to the task or card for easy identification or any other task which requires label or colored labels.
Task labels is the property of the boards.
Please refer below screenshot as of how lables are shown in the Board->Task lists -> Tasks/Cards
Now to add a new label to the task or the card . Go to the task/card
1. Click on “+” to add a new label to the task or the card.
2. Click on “Create new label”
3. Add a name to your label and select a color. Color is mandatory so a task label cannot be created without a color.
This helps in easy identification of tasks or can be used for categorisation or any other use to the user.