Unity Asset Store Pack - Easy Combine (Download link below)
Download link - https://assetstore.unity.com/packages...
The Easy Combine system provides a very simplified workflow for combining mesh objects.
The intention behind this plugin was to give the artists/developers a two-click combine solution without the need of manually building complex preparatory steps in the scene.
Key Features
• Easy usage
• Non-destructive workflow
• Scene overview
• Mesh export
• Group by Shader or Material
• Lightmapping ready