You can create tags from the Summary sheet or the from your settings. This article will cover how to create tags and grant access to tags by team roles.
Create a tag
Start by clicking the Settings COG and clicking settings
Select Tags Management
Click Add new tag
Enter the tag name and click Create
Now it's time to grant access to the tag you just created.
From the company settings, click on Document access
Click add an Access rule
Click select tag and type in the tag name
Click Add remove collaborators and select the individuals or team who should access this tag