If you are looking to hide existing default widgets in VTiger 7 e.g “Documents, Activities, Updates” you can do it by using VTiger Summary Widgets Extension.
In order to hide unwanted default existing widgets you will need “VTiger Summary Widgets“. It works on 6.x and 7.x VTiger Open Source/community editions. This extension also supports few other actions such as create custom widgets and specify things like name of the widget, columns/fields to display, limit records (if needed) & enable or disable ability to create new records from within the widget.
For further help, contact us on help@vtexperts.com. We’ll be glad to be of service.