Notes
Lightning App Page Activation in Salesforce is the process of making a Lightning app page available to users in the Salesforce mobile app or the Lightning Experience desktop application. When an app page is activated, it becomes visible and accessible to users who have the appropriate permissions to view and interact with the page.
The Lightning App Builder is the primary tool used to create and activate Lightning app pages. To activate a Lightning app page, a user with the necessary permissions must first create the page in the Lightning App Builder by selecting and arranging the desired components.