[rules-users] Adding attributes to RUles in decision tree

Hi Everyone, Can any one please suggest in which cell the XOR-GROUP can be entered while creating a rules using decision table (excel sheet) ? I have been looking at the documentation and it states that XOR-GROUP is is keyword and can be added. However it doesn't really tells in what cell (row,column) can attributes pertaining to a rule(like agenda, activation groups, xor-group, name) can be entered. Logically it should be some where at the row level but I can not figure out where it should be put. Any help or directions will be appreciated. TIA, Saurabh