1. Open your app
2. Select "Contacts" from the bottom menu bar:
3. Tap contact you wish to manage:
4. Scroll down and select "tags":
5. You can edit this contact to a current tag or create a new tag by selecting the "Green Plus":
6. To delete Slide the Tag to the left and select the "trashcan":
7. To edit select the Tag then select the "Gear" :