Save Time with Mass Actions in Split View
Where: This change applies to Lightning Experience desktop in Developer, Enterprise, Essentials, Professional, and Unlimited editions.
How: A split view automatically has checkboxes if there’s an action available for all the items in the list, and you can apply an action to the selected records in the actions dropdown menu. The items automatically deselect after you apply the action. Mass actions in split view follow the same logic as mass actions in table view. Inline edit isn’t supported in split view, so you see checkboxes only if the object has mass actions available.