How to make NPC Collide with certain part

[Kanglim12]

So, I found a script that make npc uncollide with anything, but is there a way to make npc collide with certain part?

–script

local physicsService = game:GetService('PhysicsService')

physicsService:CreateCollisionGroup('NPCs') -- the NPC collision group
-- we don't have to define a collision group for the workspace since the default one already exists, it's called "Default"

physicsService:CollisionGroupSetCollidable('NPCs', 'Default', false) -- set the NPCs collision group to not collide with the default collision group
physicsService:CollisionGroupSetCollidable('NPCs', 'NPCs', false) -- set the NPCs collision group to not collide with other NPCs

local function setNPCCollisionGroup(npc: Model) -- this function will take an NPC and add all of its BasePart descendants to the NPCs collision group
    for i,v in ipairs(npc:GetDescendants()) do
        if not v:IsA('BasePart') then
            continue
        end
        physicsService:SetPartCollisionGroup(v, 'NPCs')
    end
end

local newNPC = workspace:WaitForChild("CapyBara")
setNPCCollisionGroup(newNPC) -- now with our new NPC, call the function to set all of its descendants to the NPCs collision group

[Jacky2804]

Have you followed the tutorial that are provided from Roblox?

Collision Filtering

[Jacky2804]

So basically, Collision group will define what can you collide with based on the name of your group. For example, if you set a new group name called ‘HumanZone’ and assign an NPC to be collide-able with this group, your NPC will be able to walk through the zone. These settings can be manually configured through Collision Editor