To grant access to your App Store Connect account you need to:

1. Login to your Apple Developer account and make sure you have joined the Apple Developer Program as "Company / Organization".

2. Next go to your App Store Connect account.

3. In the main menu click "Users and Access" link.

4. On the "Users and Access" page, click "+" button.

5. On the "New User" popup, enter the details as follows:
- First Name "App"
- Last Name "Setup"
- Email "[email protected]"
- Roles, tick "Admin" checkbox

6. Next click "Invite" button to send invitation.

7. All done.

Learn more about Apple Developer permissions here.


Screenshot - Join the Apple Developer Program

Screenshot - Users and Access

Screenshot - New User