Rulesets let you configure lightbox conditions that can be saved under a name that you provide. The Rulesets that you create can be applied to any number of lightboxes. The Rulesets link is accessible under the Other Actions dropdown menu.
After clicking the Rulesets link you are taken to this page. Click the New Ruleset button to create a new Ruleset.
Give the Ruleset a name and then click Save New Ruleset.
Once the Ruleset is created, click on the Name to add rules.
Click on Add Conditions to add rules to your Ruleset
Learn more about Lightbox Conditions.