To install just put them in the plugins directory of your root 3ds max folder.
How to use floor generator in 3ds max.
To use the plugin just create a flat object and look for.
Now just launch 3ds max and follow along with these instructions to get a feel.
How to install the floor generator plugin in 3d max and a basic use of it.
Unzip and carry out the version file of your 3ds max in the 3ds max add ons folder 3.
Go ahead and download both floor generator and the multitexture map script.