Tick order?

I’m looking for a class where tick runs before all actors.
And in that class, I also need the post tick function that runs at the end after all actors updates.

I found a gameinstance, but there was no tick.
So I looked for a way to add tick to the gameinstance.
(inherit the FTickableGameObject class or use FTickerDelegate.)

But I don’t know exactly when the tick runs.
Can you tell me the exact mechanism of FTickableGameObject and FTickerDelegate???