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Global Publisher Layouts
Global publisher layouts determine the global actions that appear in the various Salesforce interfaces. In Salesforce Classic and Lightning Experience, these layouts customize the actions on global pages (like the Home page) and on the Chatter page. Lightning Experience also uses these layouts to populate the Global Actions menu. And in the Salesforce mobile app, these layouts drive the actions that appear in the action bar on the Feed and People pages. Global publisher layouts can include global actions only.

