Attaching Tags to Items
PIM Enterprise allows you to easily apply tags to item for use in Product Restrictions, etc. This PIM Enterprise feature can take the place of utilizing a custom field for this function.
Attaching the Tags
Tags can be attached to items through the "Attachments/Tags" tab. This is done by typing the tag into the "Tag Name" field and clicking "Add Tag". Once you have specified the tag(s), click "Save" near the bottom.

Detaching the Tags
If you no longer want a tag to be attached to the item, simply select the tag you want to detach and hit the "DEL" key on the keyboard. Once you detach the tag, click "Save" near the bottom.