One User Can't Set Regarding on Project Entity

Hello,

For the most part we've got Dynamics 365 for Outlook installed and running.  (No one liked Dynamics 365 App for Outlook much.) There is just one user who can't set regarding on one entity - Project.  The client has been uninstalled and re-installed a couple of times and still just the one entity isn't accessible to her. All the entities except Project are available.  No one else is having this problem (that I'm aware of at the moment). 

Any ideas how to fix this?

Thanks!