configure nat64 using module CGNAT

Hello, I'm a newbie in F5 product. I doing ATP test for my customer and there is an NAT64 test case.

I follow this link for configuration: https://techdocs.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/bigip-cgnat-implementations-13-1-0/2.html

But i can't see LSN pool in carrier grade nat when i enable module CGNAT provisioning.

I use big ip version 15.1.2 and my device is strongbox i7800