Tags are used to conveniently sort, filter and organize tasks. And there are two ways to use tags on your workspace.
Outside Task Properties
Inside Task Properties
Click on the Task to open the Task Properties.
You will find the Tags option under the Properties section of the Task Properties.
Click on + next to the Tags option to add tags.
You can search from existing Tags or create a new one using Create a New Tag button.
Enter the tag name, select a color and click on the Create button.