How would I be able to make this thing in my minigame last longer?

So it's like every second this thing pops up each time, I want it to pop up once, then have a delayed time so after that time is done, another pops up.

function watermagic()
    if game.Workspace.WaterMagic.WaterPlates:FindFirstChild("Part") then
        waterplates = game.Workspace.WaterMagic.WaterPlates:GetChildren()
        ranNum1 = math.random(1, #waterplates)
        waterChosen = waterplates[ranNum1]
        for i = 0, 1, 0.05 do
            if waterChosen.Parent == game.Workspace.WaterMagic.WaterPlates then
                waterChosen.Part.Transparency = 0
                local move = waterChosen
                move.Parent = game.Workspace.WaterMagic.Used
                waterChosen.CanCollide = false
                if game.Workspace.WaterMagic.BARRIERSGONE.Value == false then
                game.Workspace.WaterMagic.Barriers:Destroy()
                game.Workspace.WaterMagic.BARRIERSGONE.Value = true
                end
            end
            end
        end
end