NTT XG-100NE: Static routes?

I got NTT Cross to get 10Gbps, everything is working well but I’d like to add static routes.

I found the manual where it’s written it’s possible but there is no such entry in the menu…

[https://www.ntt-west.co.jp/kiki/download/flets/xg100ne/XG-100NE\_detail/guide/4-w/8w\_m30.html](https://www.ntt-west.co.jp/kiki/download/flets/xg100ne/XG-100NE_detail/guide/4-w/8w_m30.html)

Am I missing something? I already have the latest firmware.