Let's open desert sample.
Select

in the main toolbar, then open
desert.db in
data/db/samples/osg/desert
Once loaded, your application will looks like below:
Load the simulation engine with the button

. A console application window should pop.
Start the simulation with

, then select the "OSG viewer" application.
It should look like that:
Use your mouse to move the camera around the area.
Hold the left mouse button to move the camera
Use the right mouse button to zoom/unzoom
Select the f16 icon on vsTASKER GUI map.
OSG shall automatically focus on the entity: