Is there a way to mask mesh in Blender Regarding the title, is there a way to mask mesh in Blender. Recently I have come across a  guide from a game(Zepeto) that allow player to create their very own asset.  However, the guide is only for MAYA and one part of the guide require the creator to mask the mesh.
The following highlighted part is the purpose and usage of the mask.

It is done in Maya through using a feature known as &quot;Paint Vertex Tool&quot;, the right model in the image below is an example from the guide.

Hence, is there a feature or workflow in Blender that is similar to the guide?
The mask modifier can hide unuseful vertices, but it's an internal Blender modifier that will not work in Unity or others softwares. I think it's better to select the unuseful vertices, press P to separate them into another object and include or exclude this new object during FBX export, as needed.