Hi Alec. The user guide states:
"Press Managers can access the many Press Management pages, including content settings, press settings, and import/export tools and other plugins. The Press Manager(s) should configure the press via the Press Settings pages before any submissions are solicited. By default, the Press Editor, Production Editor, and Layout Editors all have "press manager" permissions."
on this page <http://pkp.sfu.ca/wiki/index.php/OMP_Userguide#Users_.26_Roles>, 4th paragraph, under Note: OMP and Roles
Thanks for your help,