1. Create Global Publisher LayoutsGlobal 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 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.
2. Add Actions to Global Publisher LayoutsActions you add to the global publisher layouts appear on pages such as the Home and Chatter pages. They also appear on the action bar and action menu on the Feed and People pages in the Salesforce mobile app.
3. Assign Global Publisher Layouts to User ProfilesOnce you finish creating a global publisher layout, you can assign it to different user profiles. For example, a Marketing User and a Standard User might need different actions in the Chatter publisher or in the Salesforce mobile app. Create multiple global publisher layouts and assign them to different user profiles to customize the actions for each profile.