Displaying Health Next to NPC/Player Names

[Tolmwn]

The output of command /version on my server is: 1.20.2 Paper
The output of command /version citizens on my server is: 2.0.33-SNAPSHOT (build 3282)
The output of command /version sentinel on my server is: 2.8.1-SNAPSHOT (build 513)
A pastebin.com link to my (full!) Sentinel/config.yml file is: https://pastebin.com/UCtNGMNj

My question:
I want to enable NPCs/Sentinel to show their remaining health next to their names. Is this possible? I'm also attaching a screenshot showing how my NPC/Sentinel currently appears.