First Scene

OBS already starts with one premade scene (Pictured above). You can also create more scenes. Right click the Scenes list box and select Add Scene to do so. (Pictured below)

Add Scene

You can later on change the order of your Scenes, as well as rename delete or duplicate them or set a hotkey.

Source order

Now all you need are some sources. After creating your scene, right click the sources list box and select a source to add.

Add Source

Give it a name and change all necessary settings.

Source Name

After adding some sources, you may need to Edit the scene