1. If we have multiple pro licenses e.g x.(+5 nodes). Is it permissible to treat the Renders Nodes as one big pool or are we limited to a max of +5 per render?
e.g say we 4 licenses, can we utilise the +20 render nodes in any split we need [20:0:0:0, 15:5:0:0, 5:5:5:5], as long as we don't exceed the +20 max
2. Are the Render Nodes looking up the master license key to match against their license key?
You can treat the render nodes as one big pool or essentially use them in whatever configuration you like, as long as you do not exceed your total license limit. Be sure to avoid using an Interactive license for Render Node purposes while it is also being used interactively.
Each license of Terragen 4 Professional comes with additional licensing for 5 render nodes. They use the same actual license key file, however. There is no "master license key" as they are all the same key.
I hope that clears things up.
- Oshyan