Step1: Choose the template and get into builder.
Step2: Click over the block where you want to insert the countdown. After then,
Step3: Go to 7th tool of the toolbar with clock icon at the left corner of your page reads 'Countdown'
Step4: Click on 'countdown' and you will get a choice window from where you can choose timer format as per your wish.
Step5: Choose the timer format and click 'insert. With this, countdown will be added to your page.
Step6: To manage the countdown settings, click over the Timer and a toolbar will appear at the right side of your page to manage all its settings.