Click on the Add rule button to start creating a new ruleset.

You can find the options in the top left bar.

In most cases, you work from left to right with the main 3 menus.

Starting with broadcast, these nodes start an action from a certain condition.

 

The most used broadcast nodes are:

You can use multiple broadcast nodes to start your ruleset:

This can be handy to keep the structure in your ruleset.

Second, are the Checks. The most used ones are:

Another node in the question menu is the Forward event:

This node has no direct function.

Use this node to keep more structure in your ruleset.

Lastly is the Actions:

Here is an example of a well-structured rule set with multiple material options that have influence over other materials.