Redwood Transactions - Line Manager direct reports/positions not showing on search of transactions

Summary:

We are working on enabling our redwood pages and we are running into an issue where our line managers are unable to view their employees when trying to search when submitting a transaction such as Transfer and Promote. The search results show up blank.

We are also experiencing this issue on the Request a position change page as a line manager.

However, our admin users who have elevated access are able to successfully view data within these pages with no problem. Our Line Manager role is a custom role so we are thinking this may be tied to privilege. What privilege would allow our line managers access to data on these pages?