Hi ^^
i found this amazing plugin but no idea how to install it https://zonegfx.com/mesh-grabber-3-0-win64/
searched in youtube and google but i didn't find any clear explanation for installing plugin manually
Download the .rar, it has a package inside of it which you should be able to install with DIM, if not, just open it yourself and drag the plugin folder to your Daz Studio folder(not the library folder, but the install path of Daz Studio).
It's a plug in. The .dll will have to go in your DS plug in directory. Default is something like C:\Program Files\DAZ 3D\DAZStudio4\plugins\
Once you get it installed, Mesh Grabber will appear in your Tools drop down menu.
Friendly Advice: If all this doesn't make sense, take some time to learn DS better first. Plus, I recommend you learn blender. Much more capable than DS if you have the time.