Dr. Manhattan in the DC Universe, New 52 creation timline

[boltmonster]

Timeline of the New 52 reality's creation
This is for everyone:

DC has shown that Doctor Manhattan fiddled with the DCU to help create the New 52.

But when did he show up?

Before or after Flashpoint 5?
Did he create Pandora and tell her to tell Barry that three timelines needed to be combined?

Did he show up during DC Universe: Rebirth and decided to start there?

Doomy Clock 10 gives us DC history from outside DC reality. Does that mean Doctor Manhattan is between our reality and DC reality?

Discuss...

[Mr.B]

In the Metaverse it was Dr.M. They seemed to ignore pandora.