You need a Mac with the software Application Loader for the next steps. In case you work on another operating system, contact Staffbase Support or your Customer Success Manager to get further support. 

1. Staffbase provides you the ipa file. 
2. Sign in to App Store Connect.
3. On your Mac, open the application Application Loader.
4. Upload the ipa file.
   This can take a couple of minutes. If the upload was successful you will get a success message.
   Apple is now processing the app and it can take several minutes until the app is available in App Store Connect.
5. In App Store Connect, navigate to the app profile you created.
6. Select the newly uploaded app in the Build section.
7. Double-check all inputs. 
8. Click Save.
9. Answer all questions with No.
10. Click Submit.
    The app is sent to the Apple reviewer. You can see the status of the review in App Store Connect. After a successful review, the app is available in the stores immediately or at the date you specified.