In the Resource List of the Individual Expense screen, the drop down list nor the icon appear for Project Members profile, not even with Administrator priviliges for this module.
It does appear for Project Managers and Administrators.
I'm sure it is a permission relates issue but I can't find the solution.
Thanks for your help !
Access depends on "Access mode to data".
By default, members have "creator" rights : this means they can only create and update their own "individual expense"
Thanks for your help ... I solved the problem giving Project members access to the resource module (which defaults to admin or creator access) and activated the special access mode called Display Button.