Offices are more or less significant positions at court. Through a modifier, they give the holders additional base Influence. The amount of Influence depends on the importance of the Office; Greater, Major, Minor or Lesser. There is also a category called Court Positions to cover less significant positions of influence at court.
Some characters are already setup with Offices even as NPCs but there are always many positions available for PCs to move into provided that they are suitable ICly. To see a list of Offices, please see the Court in King’s Landing and Court in Sunspear articles. To see current holders of Offices, please see the Targaryen and Martell family trees.
Category://System -> Influence