Hi Justin,
A lot of questions, but let me try to answer them ;)
The workspace People (from your screenshot) will display the worker (assigned to the user logged in). So in my example:

And on the workspace People this will show:

- It defaults to the worker I'm assigned to as user, with the relevant information;
- Based on my position assignment, and the position hiearachy, it will show my direct reports;
- If applicable, it will show my team members and my manager, in the hierarchy;
You can also search in the menu for other employees, and you will be able to see/edit their data and their hierarchy:

Regarding your other question:
- As soon as a candidate in Attract accepts the offer, his record will move to Talent Core HR;
- Within Talent Core HR, you will be able to hire the person;
- The data that's currently send over is still quite limited;
The person will show up in the workspace personnel management:

Please mark as verified if the answer is helpful, it would be greatly appreciated.
With regards,
Erik de Boer