OPModeler is the default user in OpenPlant Modeler's default configuration. In case of multiple users, you can set default user as per requirement. Every user has it's UCF file which can be found in \\Workspace\Users folder as shown below.
When you launch OpenPlant Modeler, user has to change the user as shown below.
NOTE: If you want to take the backup of original 'dfltuser.cfg' file before making this change, then it is recommended to move the backup file out of this folder or rename this file to change it's extension (E.g. dfltuser.cfg.original).
http://communities.bentley.com/products/plant/design___engineering/w/plant_design_and_engineering__wiki/28289.how-to-configure-openplant-modeler-to-use-workspace-from-shared-location
Bentley's Product Advantage Group requests that you please confine any comments you have on this Wiki entry to this "Comments or Corrections?" section. THANK YOU!