Services for object restriction in IE03

Hi All,

We have an security requirement in IE03 ,in IE03 after entering the equipment no and after that pressing enter button ,it will be open icon i.e. Service for objects  .

Once after expanding the service for objects button  ,attachment option is there,in that create, delete ,change option is there ,we have maintained in IE03 role only activity 03-display  type .

Now we are unable to change or delete options in service for objects ,but still we are able to create ,we are unable to find any authorization objects to restrict creation.

Any one faced this type of issue or guide me how to achieve this .

Advance Thanks