When you open a new journal at /journals/edit/<id>, you are looking at only the first of two screens the editor uses, and nothing on that screen tells you a second one exists.
Step one carries no step indicator
The writing screen holds the cover image, title, tagline, the body editor and references. It does not show a step header, a progress dot, or a label reading "Step 1 of 2" anywhere on the page. The Next button in the navbar is the only sign that there is more form ahead.
Step two is the first screen that says "step" at all
Press Next and you land on Publishing Details, and directly under that title the page prints "Step 2 of 2". This is the only screen in the editor that ever states where you are in the sequence. If you never press Next, you never see it, and you never learn the editor has two parts.
Story type and discipline exist only on step two
Step one lets you fill in a title, a tagline, the article body and a cover image. It has no field for story type or discipline anywhere on the page: those pickers sit only on Publishing Details. That is why Publish can stay disabled through everything you enter on step one. It is waiting on fields you have not been shown yet, not on anything wrong with what you typed.
The cover image is the exception. You can set it on step one, where it doubles as the article's banner, or again from the Thumbnail box on step two, since both write to the same image. Uploading it twice does nothing extra.
Publish or Next button disabled: what to check and when to report lists every field Publish is waiting for, across journals, publications and projects.
The Next button becomes Back
On Publishing Details, the same navbar button that read Next now reads Back, with its arrow pointing the other way. Pressing it does not move you forward. It saves what you set on this screen and returns you to the writing screen. There is no other exit button on step two: Back is the only one there.
If you went looking for the rest of the form and Next has already turned into Back, nothing is missing. It sits one screen behind you, on Publishing Details, where the story type, discipline and thumbnail fields are.
The status chip can mislead you here
Changing story type or discipline on Publishing Details can flip the status chip to UNPUBLISHED CHANGES, even when nothing you actually changed is being held back from readers. What changes a published journal before you press Publish explains why that happens, and Reading the journal editor's status label covers what each state on the chip means.