Numbers list

I use a lot the order list. I will like to create a preset or one key function that when I press a key will apply the right format list to a paragraph. For example:

From this:

first line
Second line

An do this:

  1. First line
  2. Second line

Next I will line to create a new preset or one key function that do this:

From this:

first line
First line A
First line B
Second line
Second line A
Second line B

Tod do this:

  1. first line
    A) First line A
    B) First line B
  2. Second line
    A) Second line A
    B) Second line B

I will like that when I selecta “first line” and apply the style It will start with 1) and when I select “second line” will start with 2), same with the letters A), B).

How can I create a one key shortcut to do this?

There isn’t a way to store an entire multi-level list schema into a preset, unfortunately. The listing system in Scrivener is fairly rudimentary. You can save list formatting into formatting presets (Format/Formatting/ submenu), and then apply a custom shortcut to those, but only one at a time. The formatting engine is “unaware” of anything outside of the one line used to create the preset.