How to install view on ubuntu 18.04

gpu:T4
gpu driver:470.57.02
omniverse: Omniverse Launcher 1.5.4
os: ubuntu 18.04

I have installed omniverse on untuntu 18.04 . Then I need to install view, but there is no “install” button at the page. like

but in this official page, Technical Requirements — Omniverse View documentation, focus on the " Suggested Minimums by Product", it tell us ubuntu 18.04 can be used to install view.

so how can I install view on ubuntu 18.04?