This clears the check boxes next to subsections of websites that make part of the SharePoint structure.
The section in the bottom part of the window allows you to configure exclusions from the search scope. You can create a list of web addresses on which the application will not scan files during the data search.
Clicking this button opens the Web address window. In this window, you can specify the web address of a SharePoint website that you need to exclude from the search scope.
Clicking this button causes the application to remove the selected web address from the exclusions. During the next task run, the application will scan files located on the specified web address.