I can't help you with the settings, but this guy sure can.
Steve Perry Backcountry Gallery
I hope this isn't too confusing. It does relate to setting up your 'action' settings. The D850 has all of the memory banks, which can be overwhelming.
You can set-up a Photo Menu and a Custom Settings Menu memory bank for "Action Shots" and have the settings there when you need to use them. Most people, who are used to the U1 and U2 memories on the dial of their cameras will tell you the A, B, C, D internal memory banks are 'useless' because if you alter any setting, it stays changed, but the U1 and U2 locks the settings until you tell it otherwise. If you change things like shutter speed, it will be temporary. The U-bank will recall the original setting.
However, on the D850, there is a setting in the camera called "Extended Photo Menu Banks." This will save at least some settings similar to the U-Memories. There is a list of settings this will apply to. How this works: Start with the "Extended Photo Menu Bank" OFF. (Add this to My Menu for easy access). Say your shutter and aperture are set at, 1/6000 at f8, and whatever other settings that this option will apply to).
When you start your shoot, turn ON "Extended Photo Menu Banks." So, if you change the shutter or f-stop, it will be temporary.
At the end of your shoot. Turn it OFF,
and the camera will reset to 1/6000 at f8. It is a bit more work than the U-banks, but if you are a stickler to have a certain setting every time you turn on your camera, this will help you. It won't apply to every setting, like EV, and it obviously isn't a perfect way to save settings.
Speaking of EV, there is an internal setting nobody ever talks about,
Fine Tune Optimum Exposure. So, if you find when you use spot meter, the camera tends to under or over expose a little bit, you can tweak that in the Fine Tune Optimum Exposure menu. It is saved internally, that way, you don't have to mess with the EV on top of your camera every time you spot meter (since you can't save it using the non-existent U-setting) You can do this with all 4 metering modes in each memory bank.
If you are doing something specific, like action shots, it is unlikely that you will be going into the internal settings and changing things while you are shooting. You will likely only be changing things you can reach on the camera body. My D300 was purchased from a pro photographer who had all 4 banks set-up: Sports, day time portraits or something like that, night and "jpeg point and shoot." It was very helpful. Since you are learning your camera, you can set up a memory bank with some settings you are experimenting with and not change all of the settings for your Action Banks.
My D500 has
night and a
focus trap. When I go out to shoot stars, I don't have to go and change a bunch of settings, and I keep "My Menu" programmed to the Fn2 button with the menu items I might want to change or use within easy reach, for example: exposure delay and virtual horizon. I was playing around with the idea of using a focus trap. I don't want to try to figure out how to set that up every time, so I set up a memory bank for it.
If you ever need to send the camera in for repair or need to reset to defaults, you can save all of the settings to your card prior to wiping the camera or you can just save the settings in case you accidentally change something.
10,000 contrarians will follow this saying the banks are awkward, stoopid and useless. You may find yourself in that camp.
Sorry, this is what happens when I have insomnia. Anyway, just wanted to let you know that the banks are useful. Give it a shot for your Action settings. Good luck, have fun,
