In current version, OGM allows user to add map, sprite and group into a scene.
User may add these 3 kinds of objects into a scene just by drag-and-drop action.

Here is a sample about adding a srpite into a scene:

1. Drag a sprite from the resource list and drop it onto the scene designer.

2. Input a new name for the sprite object in the scene, and press "OK" button:

3. Final result:

4. User may also rename/remove the object in the scene by right clicking its name in the structure list.