What is the Security Associated with the Succession Organization Chart Actions Button?

Summary:

We are trying to display the "actions" option on the Succession Org Chart page for our line managers. As documented here, it seems like a manager should be able to add themselves as a candidate to a succession plan or create succession plan for themselves if they have the required privilege. What is that privilege? Can we restrict them to just creating succession plans from this action and not add themselves to other succession plans?

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

22D

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