I am wondering if there is a way I can adjust the aircraft fuel and payload by simply entering the weight of both. Nearly every other aircraft today has this as a standard and its really difficult to get this done with the default payload manager.

Can this be added? Or is it available now?

There's the ACE, the sim menu. We tend to avoid duplication of default sim features.

Anyway you'd put this to the Suggestions board
If enough people will want this feature we'll reconsider.

@Thantheleon I've just added it to the board and I would implore other users who want this feature to reply to my threat.

just use the sim fuel board. not that big of a deal, then go to fs action in the fmc and itll show you cg and zfw

Oke it is not a big deal but very outdated and there is only a lbs option. Very anoying if you use the kg option in the FMC

I would alos appriciate that.
Getting the ZFW is really difficult in P3D in the default payload manager for me....