AS3 GSLB_Pool - How to add members?

This is resolved. For anyone stumbling across this, "use" appears to be for when the virtual server is defined locally in the AS3 declaration. If using autodiscovery, you can reference virtual servers like this:

      {
            "server": {
                "use": "/Common/Shared/F5-B"
            },
            "virtualServer": "/Tenant/App/vs_prod_dc2"
        }