Accessing a related record in VTiger is basic knowledge for every VTiger user. Go to the module and open a primary record. Then find the desired related module icon and click. You will see the list of all the related modules without any problem and uhmm – filter.   Summary Widgets OR you can use Summary Widgets extension to show related records to be shown in a table form right at the summary view. The extension Summary Widgets for VTiger allows to show records on a primary module’s summary view. It supports configuring filters for the related records. You can also select or create new records and relate them to the current primary record – right from the widget. Simply add the desired information to the popup and everything gets taken care of. There’s lot more information about the extension Summary Widgets on the product page and user guide.