For the non-editing you might look at Team / Operation Behavior / Save Work Item ( server ) for the preconditions "Read only Attributes for State, Read only Attributes for Type and State.   To navigate to this ( Eclipse client )

• right click a project area label in Team Artifacts view and Choose Open. 
  
• Click on the Process Configuration tab along the bottom of the new pane. 
  
• Expand the hieararchy under Team Configuration, select Operation Behavior. 
  
• In the table scroll down to Save Work Item (server) and click in the cell ( which may have an icon in it )
• Click Add next to the pane labeled Precondition and look for the items mentioned earlier.

It is also possible to provide inter-attribute dependencies in the project configuration.   That's a bit more involved and I think its description can be found in the Knowledge Center under Administration section for Rational Team Concert.
There are also a few articles:
Read Only Control
Attribute Customization