This may be TMI, but here are all of my lights. The small piece of sitemap code was all of my lights. Below is my .items file. The trick is the groupings:
Group:Switch:OR(ON, OFF) Lights "Lights [%s]" (All)
Group:Switch:OR(ON, OFF) Lights_FamilyRoom "Family Room [%s]" (Lights)
Switch FamilyRoom_Switch "Family Room [%s]" (Lights_FamilyRoom) {channel="omnilink:room:home:1:switch"}
Switch FamilyRoom_OnScene "Scene On [%s]" (Lights_FamilyRoom) {channel="omnilink:room:home:1
n"}
Switch FamilyRoom_OffScene "Scene Off [%s]" (Lights_FamilyRoom) {channel="omnilink:room:home:1
ff"}
Switch FamilyRoom_Scene_A "Scene A [%s]" (Lights_FamilyRoom) {channel="omnilink:room:home:1:scene_a"}
Switch FamilyRoom_Scene_B "Scene B [%s]" (Lights_FamilyRoom) {channel="omnilink:room:home:1:scene_b"}
Switch FamilyRoom_Scene_C "Scene c [%s]" (Lights_FamilyRoom) {channel="omnilink:room:home:1:scene_c"}
Switch FamilyRoom_Scene_D "Scene D [%s]" (Lights_FamilyRoom) {channel="omnilink:room:home:1:scene_d"}
Number FamilyRoom_State "Family Room Lights [%s]" (Lights_FamilyRoom) {channel="omnilink:room:home:1:state"}
Dimmer Lights_FamilyRoom_Ceiling_Switch "Ceiling [%s]" (Lights_FamilyRoom) {channel="omnilink:upb:home:2:level"}
Dimmer Lights_FamilyRoom_FanLight_Switch "Fan Light [%s]" (Lights_FamilyRoom) {channel="omnilink:upb:home:3:level"}
Dimmer Lights_FamilyRoom_Lamp_Switch "Lamp [%s]" (Lights_FamilyRoom) {channel="omnilink:upb:home:4:level"}
Dimmer Lights_FamilyRoom_CeilingFan_Switch "Ceiling Fan [%s]" (Lights_FamilyRoom) {channel="omnilink:upb:home:5:level"}
Dimmer Lights_FamilyRoom_NookLight_Switch "Nook Light [%s]" (Lights_FamilyRoom) {channel="omnilink:upb:home:6:level"}
Group:Switch:OR(ON, OFF) Lights_Downstairs "Downstairs [%s]" (Lights)
Switch Downstairs_Switch "Downstairs [%s]" (Lights_Downstairs) {channel="omnilink:room:home:9:switch"}
Switch Downstairs_OnScene "Scene On [%s]" (Lights_Downstairs) {channel="omnilink:room:home:9
n"}
Switch Downstairs_OffScene "Scene Off [%s]" (Lights_Downstairs) {channel="omnilink:room:home:9
ff"}
Switch Downstairs_Scene_A "Scene A [%s]" (Lights_Downstairs) {channel="omnilink:room:home:9:scene_a"}
Switch Downstairs_Scene_B "Scene B [%s]" (Lights_Downstairs) {channel="omnilink:room:home:9:scene_b"}
Switch Downstairs_Scene_C "Scene c [%s]" (Lights_Downstairs) {channel="omnilink:room:home:9:scene_c"}
Switch Downstairs_Scene_D "Scene D [%s]" (Lights_Downstairs) {channel="omnilink:room:home:9:scene_d"}
Number Downstairs_State "Downstairs Lights [%s]" (Lights_Downstairs) {channel="omnilink:room:home:9:state"}
Dimmer Lights_Downstairs_DwnStrHall_Switch "DwnStr Hall [%s]" (Lights_Downstairs) {channel="omnilink:upb:home:11:level"}
Dimmer Lights_Downstairs_Foyer_Switch "Foyer [%s]" (Lights_Downstairs) {channel="omnilink:upb:home:12:level"}
Dimmer Lights_Downstairs_FntRmOutlet_Switch "FntRm Outlet [%s]" (Lights_Downstairs) {channel="omnilink:upb:home:13:level"}
Dimmer Lights_Downstairs_Study_Switch "Study [%s]" (Lights_Downstairs) {channel="omnilink:upb:home:14:level"}
Group:Switch:OR(ON, OFF) Lights_Kitchen "Kitchen [%s]" (Lights)
Switch Kitchen_Switch "Kitchen [%s]" (Lights_Kitchen) {channel="omnilink:room:home:17:switch"}
Switch Kitchen_OnScene "Scene On" (Lights_Kitchen) {channel="omnilink:room:home:17
n"}
Switch Kitchen_OffScene "Scene Off" (Lights_Kitchen) {channel="omnilink:room:home:17
ff"}
Switch Kitchen_Scene_A "Scene A" (Lights_Kitchen) {channel="omnilink:room:home:17:scene_a"}
Switch Kitchen_Scene_B "Scene B" (Lights_Kitchen) {channel="omnilink:room:home:17:scene_b"}
Switch Kitchen_Scene_C "Scene c" (Lights_Kitchen) {channel="omnilink:room:home:17:scene_c"}
Switch Kitchen_Scene_D "Scene D" (Lights_Kitchen) {channel="omnilink:room:home:17:scene_d"}
Number Kitchen_State "Kitchen Lights [%s]" (Lights_Kitchen) {channel="omnilink:room:home:17:state"}
Dimmer Lights_Kitchen_Sink_Switch "Sink [%s]" (Lights_Kitchen) {channel="omnilink:upb:home:18:level"}
Dimmer Lights_Kitchen_Overhead_Switch "Overhead [%s]" (Lights_Kitchen) {channel="omnilink:upb:home:19:level"}
Dimmer Lights_Kitchen_Chandalier_Switch "Chandalier [%s]" (Lights_Kitchen) {channel="omnilink:upb:home:20:level"}
Dimmer Lights_Kitchen_Cabinet1_Switch "Cabinet 1 [%s]" (Lights_Kitchen) {channel="omnilink:upb:home:21:level"}
Dimmer Lights_Kitchen_Ceiling1_Switch "Ceiling 1 [%s]" (Lights_Kitchen) {channel="omnilink:upb:home:22:level"}
Dimmer Lights_Kitchen_Cabinet2_Switch "Cabinet 2 [%s]" (Lights_Kitchen) {channel="omnilink:upb:home:23:level"}
Dimmer Lights_Kitchen_Ceiling2_Switch "Ceiling 2 [%s]" (Lights_Kitchen) {channel="omnilink:upb:home:24:level"}
Group:Switch:OR(ON, OFF) Lights_Outside "Outside [%s]" (Lights)
Switch Outside_Switch "Outside [%s]" (Lights_Outside) {channel="omnilink:room:home:25:switch"}
Switch Outside_OnScene "Scene On" (Lights_Outside) {channel="omnilink:room:home:25
n"}
Switch Outside_OffScene "Scene Off" (Lights_Outside) {channel="omnilink:room:home:25
ff"}
Switch Outside_Scene_A "Scene A" (Lights_Outside) {channel="omnilink:room:home:25:scene_a"}
Switch Outside_Scene_B "Scene B" (Lights_Outside) {channel="omnilink:room:home:25:scene_b"}
Switch Outside_Scene_C "Scene c" (Lights_Outside) {channel="omnilink:room:home:25:scene_c"}
Switch Outside_Scene_D "Scene D" (Lights_Outside) {channel="omnilink:room:home:25:scene_d"}
Number Outside_State "Outside Lights [%s]" (Lights_Outside) {channel="omnilink:room:home:25:state"}
Switch Lights_Outside_BackFlood_Switch "Back Flood [%s]" (Lights_Outside) {channel="omnilink:upb:home:27:level"}
Switch Lights_Outside_FtPchLght_Switch "Ft Pch Lght [%s]" (Lights_Outside) {channel="omnilink:upb:home:28:level"}
Switch Lights_Outside_GarageExt_Switch "Garage Ext [%s]" (Lights_Outside) {channel="omnilink:upb:home:29:level"}
Switch Lights_Outside_BackPatio_Switch "Back Patio [%s]" (Lights_Outside) {channel="omnilink:upb:home:30:level"}
Switch Lights_Outside_PoolLight_Switch "Pool Light [%s]" (Lights_Outside) {channel="omnilink:upb:home:31:level"}
Switch Lights_Outside_GarageInt_Switch "Garage Int [%s]" (Lights_Outside) {channel="omnilink:upb:home:32:level"}
Group:Switch:OR(ON, OFF) Lights_UpstairsHall "Upstairs Hall [%s]" (Lights)
Switch Lights_UpstairsHall_Switch "Upstairs Hall [%s]" (Lights_UpstairsHall) {channel="omnilink:room:home:33:switch"}
Switch Lights_UpstairsHall_OnScene "Scene On" (Lights_UpstairsHall) {channel="omnilink:room:home:33
n"}
Switch Lights_UpstairsHall_OffScene "Scene Off" (Lights_UpstairsHall) {channel="omnilink:room:home:33
ff"}
Switch Lights_UpstairsHall_Scene_A "Scene A" (Lights_UpstairsHall) {channel="omnilink:room:home:33:scene_a"}
Switch Lights_UpstairsHall_Scene_B "Scene B" (Lights_UpstairsHall) {channel="omnilink:room:home:33:scene_b"}
Switch Lights_UpstairsHall_Scene_C "Scene c" (Lights_UpstairsHall) {channel="omnilink:room:home:33:scene_c"}
Switch Lights_UpstairsHall_Scene_D "Scene D" (Lights_UpstairsHall) {channel="omnilink:room:home:33:scene_d"}
Number Lights_UpstairsHall_State "Upstairs Hall Lights [%s]" (Lights_UpstairsHall) {channel="omnilink:room:home:33:state"}
Dimmer Lights_UpstairsHall_StairCan_Switch "Stair Can [%s]" (Lights_UpstairsHall) {channel="omnilink:upb:home:35:level"}
Dimmer Lights_UpstairsHall_UpHallCans_Switch "Up Hall Cans [%s]" (Lights_UpstairsHall) {channel="omnilink:upb:home:36:level"}
Dimmer Lights_UpstairsHall_UpendHall_Switch "Up end Hall [%s]" (Lights_UpstairsHall) {channel="omnilink:upb:home:37:level"}
Group:Switch:OR(ON, OFF) Lights_MasterBed "Master Bedroom [%s]" (Lights)
Switch Lights_MasterBed_Switch "Master Bedroom [%s]" (Lights_MasterBed) {channel="omnilink:room:home:41:switch"}
Switch Lights_MasterBed_OnScene "Scene On [%s]" (Lights_MasterBed) {channel="omnilink:room:home:41
n"}
Switch Lights_MasterBed_OffScene "Scene Off [%s]" (Lights_MasterBed) {channel="omnilink:room:home:41
ff"}
Switch Lights_MasterBed_Scene_A "Scene A [%s]" (Lights_MasterBed) {channel="omnilink:room:home:41:scene_a"}
Switch Lights_MasterBed_Scene_B "Scene B [%s]" (Lights_MasterBed) {channel="omnilink:room:home:41:scene_b"}
Switch Lights_MasterBed_Scene_C "Scene c [%s]" (Lights_MasterBed) {channel="omnilink:room:home:41:scene_c"}
Switch Lights_MasterBed_Scene_D "Scene D [%s]" (Lights_MasterBed) {channel="omnilink:room:home:41:scene_d"}
Number Lights_MasterBed_State "Master Bedroom Lights [%s]" (Lights_MasterBed) {channel="omnilink:room:home:41:state"}
Dimmer Lights_MasterBed_Overhead_Switch "Overhead [%s]" (Lights_MasterBed) {channel="omnilink:upb:home:43:level"}
Notice I have a group name for each room (Lights_Family) (Lights_Kitchen), etc. Then there are "GROUP" names above each room's lights. The top group is the (Lights) group and the second is the group that includes the rooms lights into the main (Lights) group. The sitemap simply has
Frame label="Lights"{
Group item=Lights
}
All of the lights will group up (including the scene switches) under the lights tab by room. As I mentioned before, I think there is a more elegant solution to the scene switches but I haven't set mine up.