Correct.  The roles we have unfilled are:<br/>Advisor (advisors are knowledge experts who advise the Ruler on things they may not know)<br/>Councilor (the bridge for the Ruler to his people, they know what the masses are thinking and doing)<br/>Scholar (An expert advisor specializing in sciences and academia)<br/>Swordmaster (expert in martial matters, usually drilling troops and acting as a guard for the nobility)<br/>Treasurer (oversees House finances and monetary bookkeeping)<br/><br/>You could also, of course, not fill any role and make someone who would work subordinate to the taken slots.