A Process Builder is the recommended tool to automate the approval process for certain article types and categories that require approval in KCS. A Process Builder is a tool that allows you to create automated workflows based on criteria and actions. A Process Builder can be used to create a process that submits an article for approval when certain conditions are met, such as the article type or category. A Process Builder can also be used to define approval actions, such as sending email alerts, updating fields, or posting to Chatter. Verified References: Service Cloud Consultant Certification Guide & Tips, Automate Article Approvals with Process Builder