Let's say, you already have a resource with the rule. For example, daily rental from 9:00 AM — 6:00 PM.
First, create another rule to determine the periods when your price option will be unavailable. Read how to create a rule
here.
Click on the intersection of the created rule and the price option, which should be unavailable. In the settings form opened, unset the Enabled checkbox.
Look at the example in action, where we have turned off Price option B on weekends: