Hi,
First of all, if I haven't understood what you want, just tell me, and I'll remove this post.
If you want to use Sabaki or Lizzie with Leela Zero, you should first download them at :
https://github.com/leela-zero/leela-zero/releases
https://github.com/SabakiHQ/Sabaki/releases
https://github.com/featurecat/lizzie/releases
If you want to use the Elfv2 weights, you can download them at http://zero.sjeng.org/ (it's 05dbca15)
unzip it, and you get a folder containing a file named elfv2 (without extension). This file is the weight you want.
To use it with Lizzie (V0.6) put the elfv2 file in your Lizzie folder, open config.txt and change to "network-file": "elfv2", it should work.
To use it with Sabaki, open Sabaki, "Engines", "Manage Engines", "Add",
First line : name it (Elfv2 for example)
Second line : click the folder picture and navigate to leelaz.exe
3rd line : --gtp -w C:\path to the weight file\elfv2 --noponder
4th line time_settings 0 5 1 (= 4sec/move)
You can use Sabaki with other engines, like gnugo, Zen, etc.
I hope this helps, but again, if it's not what you wanted, I'll remove this post.