As a stakeholder, you can add or remove a tag from a managed document by editing the document (explained below) or via bulk change.
Quick Steps to Add a Tag
Open the managed document
Select 'Edit Information' at the top of the map
On the details tab, scroll down until you find Tags
Click on the box beneath it to see a list of all existing process tags
Select the desired tag or create a new one by typing the new tag in the box and pressing 'enter' or 'tab'. The new tag will appear in the box
Select the green 'Update Policy' button at the bottom of the card
Quick Steps to Remove a Tag
Open the managed document
Select 'Edit Information' at the top of the map
On the details tab, scroll down until you find Tags
Select the cross in front of the tag to remove it from the textbox
Select the green 'Update Policy' button at the bottom of the card