fireproximityprompt(workspace.yourparthere.ProximityPrompt)

fireclickdetector(workspace.yourparthere.ClickDetector)

local part = Instance.new("Part")

part.ChildAdded:Connect(function(ag)
    print(typeof(ag))
end)

firesignal(part.ChildAdded)  -- nil
firesignal(part.ChildAdded, workspace) -- the instance

local arg1 = "a"
local arg2 = "b"
local arg3 = "c"
game.ReplicatedStorage.RemoteEvent:FireServer(arg1, arg2, arg3) -- it doesnt require any args if the server script didnt made it for args, chane ReplicatedStorage with your workspace.part if theres an remote event in the part