Hello, I have installed a countdown module for the website builder on my Odoo 10.0/Ubuntu 16.04

Once the module is installed, I see that in the installed apps, but there is no way to use that.

I suppose there should be a new block when a web page is the editing mode.

Any idea how to solve them?

I have tried both this module from the same author:

https://www.odoo.com/apps/modules/10.0/website_countdown/

https://www.odoo.com/apps/modules/10.0/countdown/

The readme file contains:

Countdown Widget================
This module add functionality to add widget directly to datetime field on website template.
Example:
++++++++++
Add

t-field="obj.datetime_field"  

t-field-options='{"widget": "countdown"}'

Any idea where and how to add those code?

Thank you!