Quests (pikamug) module

Hi, I'm looking for someone to make a simple module (for the Quests plugin by pikamug, see below) to "Protect an NPC" for a limited amount of time. Once you make the module, you are free to do whatever you want with it: implement it on your own server, maintain it, post it online in Spigot, etc. Doesn't have to be exclusive to me

What it must do:
Select NPC IDS to protect
Amount of time to protect NPCs in seconds [Bonus but not required: -1 for until the quest ends]
Check if NPC is dead to execute an action
[Bonus, but not required: Execute action when NPC is at specific health, eg. 50%]
And that is all ^

You could try to make it an objective or condition for a quest, whichever is easier

It should work for minecraft versions 1.12.2 and greater. At the very least, 1.12.2 - 1.14.x

plugins:
Quests - https://www.spigotmc.org/resources/quests.3711/ (I specifically use version 4.0.4)
Custom Quest API: https://pikamug.gitbook.io/quests/master/custom-quest-api
Citizens - https://www.spigotmc.org/resources/citizens.13811/ (I use version Citizens-2.0.27-b2283)
Sentinel - https://www.spigotmc.org/resources/sentinel.22017/ (I use version Sentinel-2.6.5-SNAPSHOT-b478)