You can define your JSON rules in: Confluence administration > General configuration > RADBEE > Training Genius Configuration.
You can see the rules in the Filter field, but you can't edit them there. First you have to export them to a text file, which should have a ".rules" extension. You can open this file with any text editor to make the changes.
The JSON rules structure starts with the root element
rules inside of which you always define four parts:
"name": "Default rule",
You can use multiple rule sets within the same "rules" root element. This way you can make different rules for multiple spaces on your Confluence and/or notify a different group of users each time.
Just make sure to give each rule a unique name so you can tell the difference at a glance.