Making a character ยท the options a book prints beside its rules
An option is picked at the moment its cost comes due, beside the thing it replaces. One that costs a feat sits in the feat list; one that costs a spell sits in the spell list; one that costs nothing lives on the character page. Every row wears its parent, its cost and its book.
Level 4
Feat, scores, or an option instead
The book's own words for Field Training are that the character takes one of these instead of a feat or ability score improvement, and only ever one. So the two sit in the level-4 list under their parent's name, and picking one spends the slot the way a feat would. The feat row's number is how many feats the shelf offers.
Long press
What it does, what it costs, what it needs
The flash and crack of lightning and the smell of ozone are home to you, and they beckon. Your eyes and fingertips crackle permanently with it.
The Calm and the Storm's four archetypes cost a known 2nd-level spell, so they sit in the spell list at the level they cost, under the parent's name. The panel's three lines are the option's mechanics read off the entry: what it grants, what it costs, and the prerequisite the book prints. The prose is the book's, drawn here; whose voice it speaks in is the same question as the subclass panel's.
On the character
The free ones, and everything taken
Options with no cost, such as hosting a spirit, have no moment in the builder to hang on, so they are added from the character page, where every option taken is listed with its parent and what it cost. "With the GM's permission" is the book's prerequisite line and is shown as printed; the app records what the player picked and does not police it.
Field Training's two features cost a feat or ability score improvement, so they appear in the level-4 list. The Calm and the Storm's four archetypes cost a known spell (all but one), so they appear in the spell list at that level. Spirit Vessel's six spirits cost nothing and need the GM, so they are added from the character page. Rituals Expanded replaces a class feature at level 1 for four named classes, so it would sit on the class step under the class it modifies, which this page does not draw. Every one of them is one entry under its parent's grouping, and the parent is what the list is grouped by.
The option is picked where its cost is paid rather than in a step of its own, because a separate Options step would ask the player to spend a slot they have not yet been offered. The parent's name is the group heading, as the book prints it. The character page lists options with their parent and their cost so the trade is visible afterwards. Add Option is the one loud button on that page, which it can be only if nothing else on the character page is.