Object-Specific Rules
As the name suggests, object-specific PCB rules apply only to the selected object. Only Selector-based layout rules can be applied to multiple objects.
Adding an object-specific rule
To add an object-specific rule:

1. Select an object by clicking on it or using the "Objects" menu on the left
2. Find the "Layout rules" in the right-side menu
3. Click on "Edit" → "Add"
4. Search for the desired rule and add it

Examples
Let's create a rule for an individual net that requires an especially large current draw.
Method 1: Using the Toolbar (Recommended)

1. Select the desired net or trace in your PCB layout
2. The toolbar will appear automatically
3. Use the "Trace Width" option in the toolbar to set the desired width

Selector-Based Layout Rules
As opposed to Object-specific layout rules, selector-based rules can apply to more than one object. To select which objects a rule will apply to, we use the concept of selectors (heavily inspired by the CSS Selector Syntax).

Examples
Let's create a selector-based rule setting a trace width of 2 mm for a series of different power nets.

1. Go to the rules tab on the right, add a ruleset, and then navigate to the Selector box located in the inspector panel on the right
2. You have two options for selecting power nets:
   • Beforehand, set the names of your power nets to something distinct. For example, PWR1, PWR2, and so on. Then, for your new rule, select all power nets by inputting: #PWR1, #PWR2 into the selector input
   • Another method: beforehand, add a PWR property set to TRUE for all necessary nets. Then automatically select them with a selector input of: [PWR*=TRUE]
3. Add a trace width rule set to 5 mm