The results generated by this addon can be exported to other software without errors, just like with a model rigged and weight painted in the usual way.

This is the first version, so it may still have errors or inappropriate features. I will continue to update this addon in future versions. 

Are you tired of wasting time adjusting skin weights and transfer weight for meshes when rigging a model in Blender? Let my add-ons help you. With just one click, you can attach many objects to your rigged model at the same time, and easily detach them also with just one click. Extremely fast and flexible, helping you save a significant amount of time on tedious rigging tasks.

First, please download the Zip file of this add-on. Then, open Blender, install it by clicking on Edit, Preferences, Add-ons. Click 'install' and select the Zip file you just downloaded. Activate it, and this add-on will appear in the viewport sidebar (Press shortcut N to open viewport sidebar).