You can access this section through:

Sidebar → App Installations → Management Otto Account

It appears next to the Management Amazon Account section.

Create Otto Account Button

A green button labeled

Function: It initiates the process of adding a new Otto account.

You will login to you seller account

You´ll see a modal like the one shown below asking for your permission to access the listed scopes. By clicking the red button „Bestätigen“ you´ll confirm the request.