Tagging allows you to create a set of tags for any object within the GivePulse system. In the instance you needed to tag a specific document, and run a search on this specific document, you can do that.
To set up Tagging, you must navigate to Resources -> Tags, and add tags for the system. This will then allow you to tag any specific object with that tag for searching and reporting abilities.
Once the tags are created, if you navigate to e.g., the Documents section, every single time you add a document you have the opportunity of defining the tag associated with the document as shown:
For information in regards to other forms of tagging, review Quick Notes or Labeling here: https://support.givepulse.com/hc/en-us/articles/206198718-Labeling-