Give Specific User Editing Access to a Locked Column

edited 12/09/19 in Smartsheet Basics

I am looking to give a specific user access to editing a locked column. 

The background: 

We have a list of projects that are NOT to be started until our finance director approves said project. As the project manger, I am owner of these sheets. To prevent other users from approving projects of their own will, I have locked the "Budget Approved" column. However, I need my finance director to have access to editing this column so she can approve projects without having to ask me to do the clicking for her.