What privileges are needed to access the Manage Primary Ledgers task?

Summary: I have a custom GL Functional role that I need to grant access to the manage primary ledgers task.

Content (please ensure you mask any confidential information):

I have compared to the financial application admin role and added the "Define Ledgers" privilege, but it is still grayed out. What is missing?

Version (include the version you are using, if applicable):

25C

Code Snippet (add any code snippets that support your topic, if applicable):