Ill try to be brief.

1) Once downloaded NEAF_Quarantine_Z
2) Read the readme and install according to your setup.
3) Do NOT edit the Qoarantine_Z.c as a few people have.
4) Readme for the loot including mappgroupus inside loot dir.
5) Readme for zombies included full guide. Always put my zombies under the <colour=xxxx>

If you have further issues

A) make sure you either have expansion mod or @Builditems installed. NOT BOTH as expansion don’t inform you builder items is included in the Expansion mod.

B) If you are missing code from your init.c //spawn helper copy this and paste it under my top line, and above the void) already in your init.c

void SpawnObject(string objType, vector objPos, vector objOrientation)

{
Object m_Building = Object.Cast(GetGame().CreateObject(objType, objPos));
if (m_Building == null) return;
m_Building.SetAffectPathgraph(true, false);
GetGame().GetCallQueue(CALL_CATEGORY_SYSTEM).CallLater(GetGame().UpdatePathgraphRegionByObject, 100, false, m_Building);
m_Building.SetPosition(objPos);
m_Building.SetOrientation(objOrientation);
}

C) Make sure everything points to my Map_addons/Dis_NEAF_quarantine_Z.c in your init.c correctly IE: expansion.chernaruplus or dayzoffline.chernarusplus again read the readme.

IF no success (After trying everything feel free to contact me via discord) have teamveiwer installed so I can be effective fix it and log off.

All issues usually come from modified init.c or missing text from your server setup not the mod but hey this is dayz ^^

I hope this helps & enjoy the mod.
Thanks.