When you enable the activity overview section on your profile, viewers can see more information about the types of contributions you make and repositories you're most active in. A viewer can only see information in the activity overview about repositories they have read access to. Once enabled, a viewer can also filter your contribution graph and activity timeline for a specific organization. For more information, see "Viewing contributions on your profile."
Above your contributions graph, select the Contribution settings dropdown menu, then click Activity overview.