Demotes the given player from raid assistant status
See also Raid functions.
Signature:
DemoteAssistant("unit") or DemoteAssistant("name" [, exactMatch])
Arguments:
unit- A unit in the raid (string, unitID)name- Name of a unit in the raid (string)exactMatch- True to check only units whose name exactly matches thenamegiven; false to allow partial matches (boolean)