Tracktion graph: assign nodes to Node Players

Can you explain me which node pass to player and which node should become the NodeGraph?

let’s suppose I have 2 different topologies;

  1. node A falls to B,
    node C falls to D,
    node E falls to F

B D F are nodes that gives their outputs to audio_device, I need to create 3 node player and pass to those B D and F?

  1. node A falls to B that falls to C
    node B falls to D
    nodes C and D falls to E
    node F falls to G

E and G are nodes that gives their outputs to audio_device, I need to create 2 node player and pass to those E and G ?

You just want a single root node that you pass to crate a NodeGraph.
If you currently have three root nodes (B, D & F), you need to add these to a SummingNode which will become your root.