The reason adjusted mode is separate is that some historical coat of arms are made up of a lot of emblems in an order that whilst looks pretty in game is rather cursed if you were to try and see the full layout and background usage. The meat of the system comes in the form of customizing your coat of arms from scratch or adjusting the existing one, both share their core components but adjusted mode is more limited if you want to take a pre-existing coat of arms and just tweak it a bit.
If you have previously edited and saved your new coat of arms then the discard button will be joined by a button to reset to the historical coat of arms if available.Discard any changes you’ve made to your work in progress masterpiece.
I’ll start with the bottom right options: In the center you get the preview screen of the coat of arms as you edit it and to the right some options of what to do.