Unlock Mobile Configuration Options in the Lightning App Builder
Where: This change applies to Lightning Experience in Group, Professional, Enterprise, Performance, Unlimited, and Developer editions. Available on desktop for orgs that have opted in to the new Salesforce mobile app.
When: The new Salesforce mobile app is available the week of October 14, 2019.
How: To enable your org, search for QuickStart in Setup to visit The New Salesforce Mobile App QuickStart. If you’re using Salesforce Classic, first turn on your Lightning Experience org preference. You and your users can still use Salesforce Classic on desktop.