I am trying to get vixen with teensy 3.2 on octows2811 for megatree.

Couple of questions. When using Arduino I could select which data pin down which strip incase I am using mega tree + arches + others.

However, when using octo2811
How do I know which wire in the ethernet cable I should connect to for mega tree, which one for arches

Mega tree runs 16 strands of ws2811 with 50 pixels each all chained as one long string

Arch 2 numbers 50 pixels each 2 strings as one chained.

Can you let me know, how do I wire them and which wire for which item

Also any working sketch of vixen mega tree for octows2811.