Widgets (currently in Beta) are a new way to enable booking functionality for customers. Typically widgets do not require customizing your theme and are therefore easier to install.
Listing the widgets in use in your store
Head to BookThatApp Admin > Configuration > Widgets. This will take you to the widgets page which displays the currently installed set of widgets in your store.
Adding a widget
Click 'Add New' button on the widgets page. You will be presented with a variety of widgets to choose from. From there you can configure the options. Once you are happen with the configuration click Save. Now if you reload your store page you will see the new widget.
Removing a widget
To remove a widget, click the delete icon in the widgets page.