If the arrows don't appear for Incoming post for Batch scanning, follow the steps below:
Open User Profiles.
Find the user and click on Update.
Go to the other software tab.
Tick the Batch Scanning box.
Sign the user out and back in again.
Test it should work now.
If you or the Proclaim admin don't have access to User Profiles, please raise a new case online and reference the title of this article.