This feature is only available in version 5.0
Step-by-step guide:
1. After opening homestyler, find the "Preferences" option. Located in the right toolbar at the top of the application window.
2. Select "Design Settings - Context Menu"
3. Set as left-click/right-click and save (the program defaults to left-click menu)
4. Finally, try it out by clicking the left and right mouse buttons to see if the new menu behavior works.