Download Countdown Timer Extension
Upload and Install the Extension
Open the Joomla Extension Manager, select Upload Package File, and upload the extension file. Upload and Install POWr Countdown Timer.
Find POWr Countdown Timer Module
In the Joomla Editor, click on Extensions and select Module Manager. Select the POWr Countdown Timer Extension.
Add to Fixed Position
Click Position and choose a location to add the Countdown Timer.
Set Status to Published. Then go to Menu Assignment to select the pages where POWr Countdown Timer appears.
Click Test to view your plugin in the page.
To edit your Countdown Timer, click Test, or visit the live web page. Find your Countdown Timer on the page, and click the Settings Icon. This will open the POWr Editor. In the POWr Editor, click Import Existing Countdown Timer, find Countdown Timer- and click Copy.