Tags offer are a seamless tool to structure Cards into further categories.
To add a tag:
Just click on a Card and then click on the "Add tag" button shown below. Type in your label and voila!
To remove a tag:
If you chose to remove a tag from a specific Card you can simply click on the "x" marker next to it as illustrated above.
You also have the option to delete a tag entirely by simply going to the Settings, then click on "Card Tags", hover your mouse over the tag so that a red trash icon pops up as illustrated below, allowing you to delete it.
