Reverse proxy

How to Set up a reverse proxy for our website.
This document lit bit confusing for me. : https://doc.aapanel.com/web/#/3?page_id=141
How I set up a reverse proxy

You only need to fill in the corresponding information according to the prompts on the setting page.

For example, if you want to replace example.com

proxy name: example
proxy dir : /
target url: http://example.com
send domain: example.com

i have add and it not work
https://prnt.sc/v2w1kr
Can you give us more detailed instructions