Now, you can easily Tag Stories and Task and categorized in depth. You can add Tags for stories and at add time and meanwhile, also you can change it from view.
From View stories also manage tags.
By clicking on Tag, It will open a popup for Update Tags.
Filter Stories/Tasks based on Tags
Filter the existing list based on Selected Tags from Grid View/Bulk Update like below:
Inside Tags Section, by selecting Tags and click on Filter Button it will filter the data by selected Tags.