Welding multiple children to a specific child

What I’m doing here is making a part with the name “Body” and trying to make it the main part of the children of a model
and get the other parts to weld to the main one, How would I do this?

Which one is the “main one”? Also that’s too much robotic speaking my man, you could’ve say it like:

Yo I’m making a custom character. i have a backpack and im trying to weld it to the custom character. How should I do this?

Basically, just speak what you are trying to make, cuz we dont know what “Body” is and what is the main part of hte children of a model

Okay I just made it so instead of making the weld in the script I’d just make it in explorer and it works lmao

I didn’t know how to say it clearly so thats why i was speaking robotically

local model = script.Parent
local main = model.Main

for _, child in ipairs(model:GetChildren()) do
	if child:IsA("BasePart") then
		if child ~= main then
			local weld = Instance.new("WeldConstraint")
			weld.Part0 = main
			weld.Part1 = child
			weld.Parent = child
		end
	end
end

In studio:
image

In game:
image