| Id | 
                    Int32 (Nullable) | 
                    The unique Id of the group member in the holding table. | 
                    No | 
                
        
                
                    | HoldingPersonalDetailsId | 
                    Int32 (Nullable) | 
                    The Id of the Holding Personal Details item. | 
                    No | 
                
        
                
                    | ContactId | 
                    Int32 (Nullable) | 
                    The Contact's Id. This will only be filled for holding group members of existing Contacts. | 
                    No | 
                
        
                
                    | GroupId | 
                    Int32 | 
                    The Id of the Group. | 
                    Yes | 
                
        
                
                    | DateFrom | 
                    DateTime (Nullable) | 
                     | 
                    No | 
                
        
                
                    | DateTo | 
                    DateTime (Nullable) | 
                     | 
                    No | 
                
        
                
                    | OfficeId | 
                    Int32 (Nullable) | 
                    The Id of the Group Member Office. | 
                    No | 
                
        
                
                    | StatusId | 
                    Int32 (Nullable) | 
                    The Id of the Group Member Status. | 
                    No | 
                
        
                
                    | Reason | 
                    String | 
                     | 
                    No | 
                
        
                
                    | ToRemove | 
                    Boolean | 
                    Determine if this group membership should be removed. This should only be used for existing contacts. | 
                    No |