Theme Horse

Hi Jennifer,
We have designed our theme this way. We don’t have this feature in our theme so you need code customisation for it.We recommended not to change the code because if you change the code then while updating to our new version all your customisation code will be lost. So better make child theme and first unhook the functions and the edit the code.

The file is inside theme folder -> inc -> widgets -> interface_widgets.php
How to create widgets child theme ?
==> In functions.php of the child theme, create your widgets and register them. Just copy the parent widget, change the name of widget like Theme Horse Child: Featured Page Widget, make customisation and create your custom widget. If you do this, the widgets of parent theme and child both will appear. Use your custom widget of child theme instead of the parent theme.

Just making same file structure in the child theme like /library/widgets won’t overwrite the parent file. Hope this helps.

http://codex.wordpress.org/Child_Themes

Thank you!