You can use the Widget Builder to modify an existing widget in the QuickApp
To modify an existing widget:
Open the QuickApp containing the widget you want to modify.
to launch the QuickApp Editor.
You will be presented with a grid containing the widgets in the QuickApp.
Note: If the widgets are contained in a layout, you will need to unlock the
layouts before you can edit any of the widgets.
Right-click the widget that you want to modify.
A context menu is displayed.
Click Widget properties.
The Widget Builder is presented.
Modify the desired Properties and/or Query
associated with the widget.
Click Save to save the changes.
To commit the changes you've made to the widget in the QuickApp, right-click
anywhere on the grid (in a space not occupied by the widget) and click
Commit changes to this QuickApp.
Your QuickApp will be displayed with the changes you made to the widget.