[Modified:11 Oct 2010] Now you can find the source code for this example in CodePlex The out-of-the-box SharePoint people picker allows users to select users, SharePoint groups, Distribution Lists & Security groups . Users may accidentally add large AD groups to SharePoint groups and send notifications to hundreds of people. The administrator may want more control over the security of the people picker control. In some scenario the administrator may want to restrict the user to only select ‘users’ or ‘SharePoint Groups’. This can be achieved by creating a custom people picker control which inherits from SharePoint people editor. In below example, we are going to explore creation of custom people picker control, replace the OOTB people editor control, provide a people picker settings page in central administration and create menu to access the settings page in Central Administration. 1. Create custom people picker For creating a custom control (which inherits from SharePoint PeopleE...