The first step is to launch Lightscape and load copies of the light sources  that you may require.

1. Launch Lightscape and open the office model in your working directory.
2. Select "View-Display Original View" - you will be looking through the window of the private office.
3. Right-click in the "Luminaires" palette. From the menu, select "Load..." Left-click on the "lts(.blk)" file to select it Click on "Open"	An "Open" dialogue box will appear and the file "lts.blk" should appear in the file selection area.
4. Click "Select All" and then "OK"	An "Available Luminaires" dialogue box will appear showing entries "lt_dn1", "lt_sp2", and "lt_tube". The three luminaire names will now appear in the "Luminaire Palette"
5. If source "lt1" (the general light from Form-z) appears in the "Luminaires" palette, you should delete it as follows (if it does not appear, go to the next step) Select "lt1" (left-click on it). Right-click in the "Luminaires" palette. Select "Delete" in the menu (left-click).	This is a general light source that will interfere with the modelling  of lighting conditions if you do not remove it. "lt1" should be deleted from the palette.
Now you are ready to insert a light source.	When a library entity is placed in a CAD model, only a reference to the item is used, with X,Y,Z, rotation, and scaling information, which saves repeating a great deal of detailed information describing an entity.  This is referred to in CAD terms as an "instance"
6. Right-click in the "Layer" palette to activate its palette. Select "Create..." in the menu. Make sure that the new layer name is highlighted (left-click on it if it is not blue). Right-click on the new layer name - the layers palette menu will appear  again - select "Rename" from the menu. Type over the initial new layer name (e.g., "Item6") to give it a meaningful name (such as "lights"). Right-click on the red check mark (showing that the layer is on) to the left of "fixtures" (or whatever you name the layer in step 3 above) to bring up the menu for the "Layers" palette. Select "Make Current" - a blue "C" is overlayed on the red check mark (showing that the layer is both on and the current layer).	Create a layer for luminaires and make it the current (active) layer. A new layer name (e.g., "Item6") appears in the palette.
7. Left-click on "lt_dn1" in the "Luminaires" palette to select it and then right-click. From the menu that appears, select (left-click) "Create Single Instance"	Create the instance of the luminaire. An instance of the luminaire is placed at x,y,z=0,0,0 (see below) The luminaire symbol is longer than you might expect, because the icon represents both the lamp and its intensity distribution curves (the geometric pattern of light projected into space by the fixture).
8. Make sure that the luminaire is highlighted. It should be red in the wireframe view. If not, set "Edit-Selection-Luminaire" and click on the luminaire. Select a side view. Select "Edit-Transformation..." Select the "Move" tab (with "absolute" selected) and enter x,y,z=1,3,3.05; click "Apply" Click "OK"	Now move the instance of the luminaire to an appropriate location. The icons for view selection are shown below A "Transformation" dialogue box appears. The face of the luminaire (note the green line in the figure below) should now be slightly below the face of the ceiling. NOTE: It is critical that the face of the luminaire NOT be inside the ceiling of the space; otherwise, the light will not radiate around the space. If you wish, you can test this later, by repeating Part I with the face of the luminaire placed above the ceiling.
9. Save the "preparation file" (preparation files have a ".lp" extension) for future use	Once processing is initiated, Lightscape converts preparation files to "solution files" (*.ls extension), which cannot be converted back to preparation files.
10. Select the front perspective view.
11. Invoke "Process-Parameters..." Leave settings at defaults, except the following parameters in the "Process" area of the dialogue box: Make sure that "Daylight (sunlight + sky light)" is not selected (no tick in check box).	A "Process Parameters" dialogue box will appear.
12. Click on Wizard. Leave "Quality" at 3	A "Quality" dialogue box appears.
13. Click "Next" Select "no" for "Do you want to consider daylighting in your solution?"	A "Daylight" dialogue box appears. This will highlight the effects of the electric source.
14. Click "Finish" and "OK," exiting the "Wizard" dialogue box.
15. Invoke "Process-Initiate" Click "yes" to save your file. Invoke "Process-Go"	A Lightscape caution dialogue box will appear The simulation will begin. The iteration number (the number of the light transfer being considered) will be shown in the lower dialogue bar of the viewport, along with the percent of the light energy distributed. It will take a few seconds to go through 30 or more iterations and distribute 90 percent or more of the light energy. At around this point, invoke "Process-Stop," so you can view the results.
16.  Invoke "Process-Stop" Invoke "Display-Solid" (or click on the corresponding icon in the last cluster on the right - use the help balloons to find it).
17. If the entire screen appears black, invoke "File-Properties" If not selected, select the "Display" tab. Set "Brightness" to 90 and click "Apply"; adjust lighter or darker as required. Click "OK" to close the "Document Properties" dialogue box.	A "Document Properties" dialogue box appears. Adjust the brightness until you have a satisfactory view of the space (keep the space on the dim side so that you can clearly see the pattern of light created by the luminaire).
18. Inspect the pattern of light created by this luminaire. Use "Orbit" to rotate the space up and down and from side to side. Rotate the model so that you are looking at the ceiling. With the downlight, the only light reaching the ceiling is that reflected from other room surfaces.	Lightscape provides an effective representation of the pattern of light falling on the walls and floor. The "edge" of the beam is "soft" (there is a gradual fall-off in intensity of the direct beam at its periphery) - this is an effect one would expect to see with a real light source of this type.
19. Save your model and then save it under a new name for the work in Part II.

Part II - Aiming the Luminaire

The luminaire created in Part I faced directly downward. Lightscape has tools that are useful in creating a variety of orientations. One approach is to use "Rotation" values in the "Transformation" dialogue (under Edit) to set numerical values. However, you may also aim the luminaire by clicking on a desired "target"

1. Open the ".lp" preparation file that you saved around step 10 above, and save it under a new name.
2. Select the luminaire.	It should be highlighted when selected.
3. Select a front (perspective) view.
4. Select "Edit-Transformation..." Select the "Aim" tab and make sure that the "Pick" feature is selected	A "Transformation" dialogue box appears.
5. Click on the rear wall directly behind the lamp and 2/3 of the wall height from the floor. Click "OK" when you are satisfied with the orientation of the lamp.	You will see the icon for the lamp beam shift.
6. Save the changes to a new "preparation file" if you wish.	Once processing is initiated, they become "solution files" (".ls "extension) and cannot be converted to preparation files.
7. Follow steps 10-17 of Part I to see the effects of the change in orientation.	You will see that the bright spot has shifted to the rear wall.

Congratulations, you have now completed the second Lightscape tutorial!