You will need to look at changing the Wo.AssignmentType in the ConfigPanel based on your requirements. Work Manager is not designed to be a dashboard but rather intended for the user to see the work orders they are responsible for completing. There is no single switch to make everything read only as that is the opposite of what the application is designed to do. You can make configuration changes to disable editing / status changes on work orders if needed but I would suggest asking what the goal is in that process.
-Bill