For each Map service in the Table of content it is possible to configure a Layer list of map service.

Layer list configuration
In the Layer list of a map service it is possible to
•override attributes of existing elements of the ArcMap Table of content,
•add attributes to existing elements of the ArcMap Table of content.
Note that you can’t change the display order of Layer groups or Layers by configuring a WebOffice 10 R3 Table of content structure different to the ArcMap Table of content.