The Details tab isn't fixed. You can reorder every card, add extras from a predefined library, and remove any card you added, all from the Layout Settings editor.
How to customize the layout
Open the Adaptive Workspaces settings, and click on the Jobs card.
If you are an admin, you can edit the Standard View or edit an existing view, or you can also create a new view by clicking on the + New View button as seen in the image below
To reorder, drag any card, including the five defaults, into a new position.
To add a card, click on the Add Card option that opens the library and pick from the available predefined cards. The same card can be added more than once, each instance keeps its own configuration.
To remove a card, click its remove icon. Only cards you've added can be removed, not the defaults - Properties, Hiring Team, Additional Information and Job Description
Once done, name your view, select who you want to share it with and click Publish View.
Example
Your team never looks at Job Highlights first, they always check Hiring Team. Drag Hiring Team to the top of the card list, then Publish. Every user viewing this account's jobs now sees Hiring Team first on the Details tab.
Things to know
The default cards (Job Description, Hiring Team, Additional Information, Properties) can be reordered but never removed.
If you're mid-edit and haven't published, other users keep seeing the old layout, only you see the draft state, and only inside the editor.