Is there a way to restrict the contingent worker for raising the expenses for her self

Summary: Currently the contingent worker acts as a delegator, so she has to raise the Expense reports for her manager. At the same time she is also able to raise the expenses for her self. Since she assigned as team member in the project now she has access to the Project for which she is able to enter the expenses. is there a way to restrict the same. So that she can't raise the expenses for herself.

Content (please ensure you mask any confidential information):

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

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