Can be confusing sometimes 
You received the right link, so following it should lead you to that forum topic.
But now you started a new thread yourself 
So, just follow this link
https://community.homey.app/t/aqara-xiaomi-smart-home-zigbee-app-v1-6-0-test-v1-7-0/156
Then scroll all the way down and hit the blue “Reply” button, and post your questions there.
The how-to’s are mostly to be found in the first post(s) of an app topic.
