Tags are a way to categorize and sort you projects and pins so that you can better manage your items
Tags can be added at two separate levels, at the project level and at the pin level. Adding tags for a project allows you to search and filter all of the projects in your workspace by a tag versus the name. This should make it easier to find those projects that you do not quite remember the names of your projects.
This tag icon will be on each of your projects, here you can create new tags and add previously used tags.
You can filter for these tags on the workspace screen by clicking the tag icon next to the date filter:
All tags created on the pin and project will be available at the workspace level for anyone to use
For pins the menu will look very similar,
You can add tags to pins from the pin creation screen as well as from pins that are already dropped
You can filter for these tags from the project dashboard